Design Advice

Jul 9, 2004

I'm trying to design a database that handles Clients, Cases, Individual and Group Sessions. My problem is that a client can have individual sessions and belong to more than one group at the same time, so I have a many-to-many relationship to deal with. Also I'm trying to design it so that I can have a form that when a group is selected from a drop down it shows all clients assigned to that group and will let me enter new session data for them.

Just looking for some advice on how to handle the relationships.

Maybe someone could show me how they see the relationships working.

My take is that the session is linked to the case not the client, I could be thinking incorrectly?

Thank you,

tblClient

tblClientCase

tblCaseSessionLog

tblClientCaseGroupLink

tblGroups

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DB Design Advice

Jan 12, 2007

I'm creating a DB to track clients, programs, and client participation in the programs. They are service programs. A client can be in more than one program and a program can have more than one client.
Can someone give me an example of how they would layout the tables?
My guess is:
tblClient, ClientID
tblClientProgramLog, ProLogID, ClientID
tblProgramDetails, ProDetailID, ProLogID
tblPrograms, ProgramID, ProDetailID
I appreciate any suggestions,

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Design Advice?

Jun 3, 2004

I have an construction estimation system, and I want to develop a project management system. I will be using the same database because there are shared tables. My question is this, critical data tables are considered tables with dollar values and these tables should not be shared across the whole company. I do however need information from these tables, such as product and quantity of the product for a given project. When an estimate becomes a project it is assigned a project number. At this point I thought of Copying the required data from the estimate side to the project side. This would result in duplicate data in a sence but the tables will be referenced from two standalone front end applications. Should I copy the data from one table to another, or create new "views" to the estimate tables for the project management portion.

What would be the best solution to this problem? I find in some circumstances, a new table is required because additional data will be saved on the "Project Management" side, but not in all cases.

Mike B

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Database Design. Need Advice. Thank You.

Oct 19, 2007

Hello,

I am creating a database where:
- I have a Blogs and Folders system.
- Use a common design so I can implement new systems in the future.

Users, Comments, Ratings, View, Tags and Categories are tables common to all systems, i.e., used by Posts and Files in Blogs and Folders.

- One Tag or Category can be associated to many Posts or Files.
- One Comment, View or Rating should be only associated to one Post or one File. I am missing this ... (1)

Relations between a File / Folder and Comments / Ratings / View / Tags / Categories are done using FilesRatings, FoldersViews, etc.

I am using UniqueIdentifier as Primary Keys.
I checked ASP.NET Membership tables, a few articles and few features in my project, such as renaming files with the GUID of their records.
I didn't decided yet for INT or UNIQUEIDENTIFIER.

I am looking for some feedback on the design of my database.
One thing I need to improve is mentioned in (1)

Thank You,
Miguel

My Database Script:

-- Users ...
create table dbo.Users
(
UserID uniqueidentifier not null
constraint PK_User primary key clustered,
[Name] nvarchar(200) not null,
Email nvarchar(200) null,
UpdatedDate datetime not null
)

-- Categories ...
create table dbo.Categories
(
CategoryID uniqueidentifier not null
constraint PK_Category primary key clustered,
[Name] nvarchar(100) not null
)

-- Comments ...
create table dbo.Comments
(
CommentID uniqueidentifier not null
constraint PK_Comment primary key clustered,
AuthorID uniqueidentifier not null,
Title nvarchar(400) null,
Body nvarchar(max) null,
UpdatedDate datetime not null,
constraint FK_Comments_Users
foreign key(AuthorID)
references dbo.Users(UserID)
)

-- Ratings ...
create table dbo.Ratings
(
RatingID uniqueidentifier not null
constraint PK_Rating primary key clustered,
AuthorID uniqueidentifier not null,
Value float not null,
constraint FK_Ratings_Users
foreign key(AuthorID)
references dbo.Users(UserID)
)

-- Tags ...
create table dbo.Tags
(
TagID uniqueidentifier not null
constraint PK_Tag primary key clustered,
[Name] nvarchar(100) not null
)

-- Views ...
create table dbo.Views
(
ViewID uniqueidentifier not null
constraint PK_View primary key clustered,
Ticket [datetime] not null
)

-- Blogs ...
create table dbo.Blogs
(
BlogID uniqueidentifier not null
constraint PK_Blog primary key clustered,
Title nvarchar(400) null,
Description nvarchar(2000) null,
CreatedDate datetime null
)

-- Posts ...
create table dbo.Posts
(
PostID uniqueidentifier not null
constraint PK_Post primary key clustered,
BlogID uniqueidentifier not null,
AuthorID uniqueidentifier not null,
Title nchar(1000) null,
Body nvarchar(max) null,
UpdatedDate datetime not null,
IsPublished bit not null,
constraint FK_Posts_Blogs
foreign key(BlogID)
references dbo.Blogs(BlogID)
on delete cascade,
constraint FK_Posts_Users
foreign key(AuthorID)
references dbo.Users(UserID)
on delete cascade
)

-- PostsCategories ...
create table dbo.PostsCategories
(
PostID uniqueidentifier not null,
CategoryID uniqueidentifier not null,
constraint PK_PostsCategories
primary key clustered (PostID, CategoryID),
constraint FK_PostsCategories_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsCategories_Categories
foreign key(CategoryID)
references dbo.Categories(CategoryID)
)

-- PostsComments ...
create table dbo.PostsComments
(
PostID uniqueidentifier not null,
CommentID uniqueidentifier not null,
constraint PK_PostsComments
primary key clustered (PostID, CommentID),
constraint FK_PostsComments_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsComments_Comments
foreign key(CommentID)
references dbo.Comments(CommentID)
on delete cascade
)

-- PostsRatings ...
create table dbo.PostsRatings
(
PostID uniqueidentifier not null,
RatingID uniqueidentifier not null,
constraint PK_PostsRatings
primary key clustered (PostID, RatingID),
constraint FK_PostsRatings_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsRatings_Ratings
foreign key(RatingID)
references dbo.Ratings(RatingID)
on delete cascade
)

-- PostsTags ...
create table dbo.PostsTags
(
PostID uniqueidentifier not null,
TagID uniqueidentifier not null,
constraint PK_PostsTags
primary key clustered (PostID, TagID),
constraint FK_PostsTags_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsTags_Tags
foreign key(TagID)
references dbo.Tags(TagID)
)

-- PostsViews ...
create table dbo.PostsViews
(
PostID uniqueidentifier not null,
ViewID uniqueidentifier not null,
constraint PK_PostsViews
primary key clustered (PostID, ViewID),
constraint FK_PostsViews_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsViews_Views
foreign key(ViewID)
references dbo.Views(ViewID)
on delete cascade
)

-- Folders ...
create table dbo.Folders
(
FolderID uniqueidentifier not null
constraint PK_Folder primary key clustered,
[Name] nvarchar(100) null,
Description nvarchar(2000) null,
CreatedDate datetime not null,
URL nvarchar(400) not null
)

-- Files ...
create table dbo.Files
(
FileID uniqueidentifier not null
constraint PK_File primary key clustered,
FolderID uniqueidentifier not null,
AuthorID uniqueidentifier not null,
Title nvarchar(400) null,
Description nvarchar(2000) null,
[Name] nvarchar(100) not null,
URL nvarchar(400) not null,
UpdatedDate datetime not null,
IsPublished bit not null,
Type nvarchar(50) null,
constraint FK_Files_Folders
foreign key(FolderID)
references dbo.Folders(FolderID)
on delete cascade,
constraint FK_Files_Users
foreign key(AuthorID)
references dbo.Users(UserID)
on delete cascade
)

-- FilesCategories ...
create table dbo.FilesCategories
(
FileID uniqueidentifier not null,
CategoryID uniqueidentifier not null,
constraint PK_FilesCategories
primary key clustered (FileID, CategoryID),
constraint FK_FilesCategories_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesCategories_Categories
foreign key(CategoryID)
references dbo.Categories(CategoryID)
)

-- FilesComments ...
create table dbo.FilesComments
(
FileID uniqueidentifier not null,
CommentID uniqueidentifier not null,
constraint PK_FilesComments
primary key clustered (FileID, CommentID),
constraint FK_FilesComments_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesComments_Comments
foreign key(CommentID)
references dbo.Comments(CommentID)
on delete cascade
)

-- FilesRatings ...
create table dbo.FilesRatings
(
FileID uniqueidentifier not null,
RatingID uniqueidentifier not null,
constraint PK_FilesRatings
primary key clustered (FileID, RatingID),
constraint FK_FilesRatings_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesRatings_Ratings
foreign key(RatingID)
references dbo.Ratings(RatingID)
on delete cascade
)

-- FilesTags ...
create table dbo.FilesTags
(
FileID uniqueidentifier not null,
TagID uniqueidentifier not null,
constraint PK_FilesTags
primary key clustered (FileID, TagID),
constraint FK_FilesTags_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesTags_Tags
foreign key(TagID)
references dbo.Tags(TagID)
)

-- FilesViews ...
create table dbo.FilesViews
(
FileID uniqueidentifier not null,
ViewID uniqueidentifier not null,
constraint PK_FilesViews
primary key clustered (FileID, ViewID),
constraint FK_FilesViews_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesViews_Views
foreign key(ViewID)
references dbo.Views(ViewID)
on delete cascade
)

-- Run script
go

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Design Advice - Need ASAP

Nov 27, 2007

Hello Everyone. Im sorry for this urgent post, but have critical issue that needs a solution quick. So for my issue. I am adjusting our sales order tables to handle a couple different scenarios. Currently we have 2 tables for sales orders

SALESORDERS
------------
SORDERNBR int PK,
{ Addtl Header Columns... }

SALESORDERDETAILS
-------------------
SODETAILID int,
SORDERNBR int FK,
PN varchar,
SN varchar(25),
{ Addtl Detail Columns ... }

Currently the sales order line item is serial number specific. I need to change the tables to be able to handle different requests like :

Line Item Request ( PN, QTY )
Line Item Request ( SN )
Line Item Request ( PN, GRADE, QTY )
ETC.

I am thinking i need to create a new table to hold the specifics for a particular line item. Maybe like this :

SALESORDERSPECS
----------------
SOSPECID int,
SODETAILID int FK,
SPECTYPE varchar, IE : SN, PN, GRADE. { one value per row }
SPECVALUE varchar IE : GRADE A

Im thinking i would need to rename the SALESORDERDETAILS table to SALESORDERITEMS. SALESORDERITEMS would just contain header info like
SalePrice,
Warranty,
Etc...

Then rename SALESORDERSPECS to SALESORDERDETAILS...

Anyone understand what im trying to do? If you need more info please ask. You can also get a hold of me through IM.

Thanks!

JayDial

JP Boodhoo is my idol.

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Your Professional Advice Please - Design

May 18, 2006

Hi All, I have read MANY posts on how to track changes to data overtimeIt appears there are two points of view1. Each record supports a Change Indicator flag toindicate the current record(would this be EVERY table?)2. Each table is duplicated as an archive table andtriggers are used to update archiveCan someone give me some guidance based on REAL world experiencewhich works best for them?My scenario - I have insurance policies and must track history aspolicies are updated by customer service reps.Imagine many tables Policy>LifePol>LifePolRiders[color=blue]>AccidentPol >etc...>DIPol>DIPolRiders[/color]To me the archive table scenario does not seem scalable at all....someguidance on design would be aprreciated...Thanks!!!

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Database Design. Need Advice. Thank You.

Oct 21, 2007

Hello,

I am creating a database where:
- I have a Blogs and Folders system.
- Use a common design so I can implement new systems in the future.

Users, Comments, Ratings, View, Tags and Categories are tables common to all systems, i.e., used by Posts and Files in Blogs and Folders.

- One Tag or Category can be associated to many Posts or Files.
- One Comment, View or Rating should be only associated to one Post or one File. I am missing this ... (1)

Relations between a File / Folder and Comments / Ratings / View / Tags / Categories are done using FilesRatings, FoldersViews, etc.

I am using UniqueIdentifier as Primary Keys.
I checked ASP.NET Membership tables, a few articles and few features in my project, such as renaming files with the GUID of their records.
I didn't decided yet for INT or UNIQUEIDENTIFIER

I am looking for some feedback on the design of my database.
One thing I think need to improve is mentioned in (1)

But any advices to improve it would be great.

Thank You,
Miguel

My Database Script:

-- Users ...
create table dbo.Users
(
UserID uniqueidentifier not null
constraint PK_User primary key clustered,
[Name] nvarchar(200) not null,
Email nvarchar(200) null,
UpdatedDate datetime not null
)

-- Categories ...
create table dbo.Categories
(
CategoryID uniqueidentifier not null
constraint PK_Category primary key clustered,
[Name] nvarchar(100) not null
)

-- Comments ...
create table dbo.Comments
(
CommentID uniqueidentifier not null
constraint PK_Comment primary key clustered,
AuthorID uniqueidentifier not null,
Title nvarchar(400) null,
Body nvarchar(max) null,
UpdatedDate datetime not null,
constraint FK_Comments_Users
foreign key(AuthorID)
references dbo.Users(UserID)
)

-- Ratings ...
create table dbo.Ratings
(
RatingID uniqueidentifier not null
constraint PK_Rating primary key clustered,
AuthorID uniqueidentifier not null,
Value float not null,
constraint FK_Ratings_Users
foreign key(AuthorID)
references dbo.Users(UserID)
)

-- Tags ...
create table dbo.Tags
(
TagID uniqueidentifier not null
constraint PK_Tag primary key clustered,
[Name] nvarchar(100) not null
)

-- Views ...
create table dbo.Views
(
ViewID uniqueidentifier not null
constraint PK_View primary key clustered,
Ticket [datetime] not null
)

-- Blogs ...
create table dbo.Blogs
(
BlogID uniqueidentifier not null
constraint PK_Blog primary key clustered,
Title nvarchar(400) null,
Description nvarchar(2000) null,
CreatedDate datetime null
)

-- Posts ...
create table dbo.Posts
(
PostID uniqueidentifier not null
constraint PK_Post primary key clustered,
BlogID uniqueidentifier not null,
AuthorID uniqueidentifier not null,
Title nchar(1000) null,
Body nvarchar(max) null,
UpdatedDate datetime not null,
IsPublished bit not null,
constraint FK_Posts_Blogs
foreign key(BlogID)
references dbo.Blogs(BlogID)
on delete cascade,
constraint FK_Posts_Users
foreign key(AuthorID)
references dbo.Users(UserID)
on delete cascade
)

-- PostsCategories ...
create table dbo.PostsCategories
(
PostID uniqueidentifier not null,
CategoryID uniqueidentifier not null,
constraint PK_PostsCategories
primary key clustered (PostID, CategoryID),
constraint FK_PostsCategories_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsCategories_Categories
foreign key(CategoryID)
references dbo.Categories(CategoryID)
)

-- PostsComments ...
create table dbo.PostsComments
(
PostID uniqueidentifier not null,
CommentID uniqueidentifier not null,
constraint PK_PostsComments
primary key clustered (PostID, CommentID),
constraint FK_PostsComments_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsComments_Comments
foreign key(CommentID)
references dbo.Comments(CommentID)
on delete cascade
)

-- PostsRatings ...
create table dbo.PostsRatings
(
PostID uniqueidentifier not null,
RatingID uniqueidentifier not null,
constraint PK_PostsRatings
primary key clustered (PostID, RatingID),
constraint FK_PostsRatings_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsRatings_Ratings
foreign key(RatingID)
references dbo.Ratings(RatingID)
on delete cascade
)

-- PostsTags ...
create table dbo.PostsTags
(
PostID uniqueidentifier not null,
TagID uniqueidentifier not null,
constraint PK_PostsTags
primary key clustered (PostID, TagID),
constraint FK_PostsTags_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsTags_Tags
foreign key(TagID)
references dbo.Tags(TagID)
)

-- PostsViews ...
create table dbo.PostsViews
(
PostID uniqueidentifier not null,
ViewID uniqueidentifier not null,
constraint PK_PostsViews
primary key clustered (PostID, ViewID),
constraint FK_PostsViews_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsViews_Views
foreign key(ViewID)
references dbo.Views(ViewID)
on delete cascade
)

-- Folders ...
create table dbo.Folders
(
FolderID uniqueidentifier not null
constraint PK_Folder primary key clustered,
[Name] nvarchar(100) null,
Description nvarchar(2000) null,
CreatedDate datetime not null,
URL nvarchar(400) not null
)

-- Files ...
create table dbo.Files
(
FileID uniqueidentifier not null
constraint PK_File primary key clustered,
FolderID uniqueidentifier not null,
AuthorID uniqueidentifier not null,
Title nvarchar(400) null,
Description nvarchar(2000) null,
[Name] nvarchar(100) not null,
URL nvarchar(400) not null,
UpdatedDate datetime not null,
IsPublished bit not null,
Type nvarchar(50) null,
constraint FK_Files_Folders
foreign key(FolderID)
references dbo.Folders(FolderID)
on delete cascade,
constraint FK_Files_Users
foreign key(AuthorID)
references dbo.Users(UserID)
on delete cascade
)

-- FilesCategories ...
create table dbo.FilesCategories
(
FileID uniqueidentifier not null,
CategoryID uniqueidentifier not null,
constraint PK_FilesCategories
primary key clustered (FileID, CategoryID),
constraint FK_FilesCategories_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesCategories_Categories
foreign key(CategoryID)
references dbo.Categories(CategoryID)
)

-- FilesComments ...
create table dbo.FilesComments
(
FileID uniqueidentifier not null,
CommentID uniqueidentifier not null,
constraint PK_FilesComments
primary key clustered (FileID, CommentID),
constraint FK_FilesComments_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesComments_Comments
foreign key(CommentID)
references dbo.Comments(CommentID)
on delete cascade
)

-- FilesRatings ...
create table dbo.FilesRatings
(
FileID uniqueidentifier not null,
RatingID uniqueidentifier not null,
constraint PK_FilesRatings
primary key clustered (FileID, RatingID),
constraint FK_FilesRatings_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesRatings_Ratings
foreign key(RatingID)
references dbo.Ratings(RatingID)
on delete cascade
)

-- FilesTags ...
create table dbo.FilesTags
(
FileID uniqueidentifier not null,
TagID uniqueidentifier not null,
constraint PK_FilesTags
primary key clustered (FileID, TagID),
constraint FK_FilesTags_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesTags_Tags
foreign key(TagID)
references dbo.Tags(TagID)
)

-- FilesViews ...
create table dbo.FilesViews
(
FileID uniqueidentifier not null,
ViewID uniqueidentifier not null,
constraint PK_FilesViews
primary key clustered (FileID, ViewID),
constraint FK_FilesViews_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesViews_Views
foreign key(ViewID)
references dbo.Views(ViewID)
on delete cascade
)

-- Run script
go

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Design/Optimization Advice?

Oct 22, 2007

Hi all-

I have a schema that is mostly working, but I was wondering if some of you with more experience than I might give me some constructive criticism on my methodology.

Basically, I have a single table that stores data for many records. Each record has a variable number of fields, each of which can be a different data type. Later, queries will pull filtered subsets of data from the table, and do calculations on specific fields. In my implementation, the fields for a record are bound together by the datagroup (uniqueidentifier) column in the LotsOData table, the field name is defined by the dataname column, and the field value is stored in the datavalue column, which is type sql_variant.

One problem I had, and I'm not able to reliably replicate, is that the more complicated queries sometimes raise casting errors on the sql_variant column, even when the data is absolutely correct. I've been able to avoid this case by pre-selecting some of the subqueries into temporary tables first, then joining on the temp tables in the main query, but that seems horribly inefficient.

I've included a sample table, data, and query to demonstrate my basic solution. I was wondering if anybody could provide some insight on a better way of designing a solution for this scenario.

Thanks!
-Eric.

PS: bonus points if you have any insight at all on the casting error I mentioned!!

-- create tablecreate table LotsOData( pk int identity, dataname nvarchar(16) not null, datagroup uniqueidentifier, datavalue sql_variant);-- lot of insertsdeclare @group_a uniqueidentifier, @group_b uniqueidentifier, @group_c uniqueidentifier;set @group_a = newid();set @group_b = newid();set @group_c = newid();insert into LotsOData (dataname, datagroup, datavalue)select 'some_int', @group_a, 1union all select 'some_int', @group_b, 2union all select 'some_int', @group_c, 3insert into LotsOData (dataname, datagroup, datavalue)select 'some_char', @group_a, 'a'union all select 'some_char', @group_b, 'b'union all select 'some_char', @group_c, 'c'insert into LotsOData (dataname, datagroup, datavalue)select 'some_string', @group_a, 'abc'union all select 'some_string', @group_b, '!@#'union all select 'some_string', @group_c, 'xyz'insert into LotsOData (dataname, datagroup, datavalue)select 'some_float', @group_a, 1.23union all select 'some_float', @group_b, 2.34union all select 'some_float', @group_c, 3.45insert into LotsOData (dataname, datagroup, datavalue)select 'some_datetime', @group_a, cast('01/01/2001 01:00:00' as datetime)union all select 'some_datetime', @group_b, getdate()union all select 'some_datetime', @group_c, cast('01/01/2009 01:00:00' as datetime)-- do some big ugly query:select cast(a.datavalue as datetime) as datatime_data, cast(b.datavalue as int) as int_data, cast(c.datavalue as char(1)) as char_data, cast(d.datavalue as nvarchar(max)) as string_data, cast(e.datavalue as float) as float_data, cast(b.datavalue as int) * cast(e.datavalue as float) as calc_datafrom ( select datavalue, datagroup from LotsOData where dataname = 'some_datetime' ) a inner join ( select datavalue, datagroup from LotsOData where dataname = 'some_int' ) b on b.datagroup = a.datagroup inner join ( select datavalue, datagroup from LotsOData where dataname = 'some_char' ) c on c.datagroup = a.datagroup inner join ( select datavalue, datagroup from LotsOData where dataname = 'some_string' ) d on d.datagroup = a.datagroup inner join ( select datavalue, datagroup from LotsOData where dataname = 'some_float' ) e on e.datagroup = a.datagroupwhere cast(a.datavalue as datetime) between '01/01/2006' and '01/01/2008';

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Design Advice For Report Architecture

Jan 24, 2008

Any design suggestions for the best way to architect this report using SQL Reporting Services 2005 are appreciated!

My website features a catalog of roughly 50,000 items, each of which may be appear in a list of search results or in a detailed view. There are counters on the pages that update totals for such appearances and track other item-specific information in several tables in a SQL database. The catalog of items changes frequently, so the list of item IDs is never exactly the same from month to month.

I've been asked to produce a monthly report of this data for each of the items in the catalog, with reports for the current and previous months (for many years) accessible at all times. Some -- but not all -- items are useful for one purpose or another and so can be considered as belonging to a group of items. Although I have not yet been asked to create a report that aggregates the values for all Group members into a single report for that Group, I can clearly see it would be valuable and will be requested soon.

To ensure the report captures the data for an entire month, it must be run at the very end of each month. That means I will need to run the report using a Schedule that kicks off the process at 12:01am every 1st of the month. The report must be processed and stored for later retrieval and rendering on demand.

Considering the number of items and the indefinite length of time the report data must be retained, my question is really what's the best way to set all this up?

Should I create a report for each item separately? That would mean the scheduled task would have to somehow discover the current list of item IDs (which is available via query from the database) and create and process (but not render) a report for each (passing the item ID as a report parameter?), adding it to the report history. Although each report would be small take only a short time to run, overall that seems like it would take a long time to run and create a huge number of reports to store each month.

Or should I create a single 'master' report that contains all the data for every item for the month, and then use the item ID as a filter on the data when it is rendered? While that means only one report is created each month and added to the history, it would be a much larger report and take much longer to run (with more potential for timeouts and errors to scuttle the whole report). It also means all the data for the entire report has to be loaded every time the report is rendered, even though only 1/50,000 of the data (the data for 1 of the 50,000 items) will actually be viewed with any given rendering. But that would seem overly cumbersome, slow, and wastefully band-width intensive.

Any alternatives, suggestions, considerations, etc. -- all welcome!

Thanks

BillB

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Design Advice...writing A Text File

Jul 23, 2004

I need to create a text file using information from SQL tables/views in the following format...Can anyone recommend a direction or procedure to look into, i.e, sql script, custom dts, etc. The items in parentheses identify specific portions of the text file.

(01)
101081,84423,customer ,072304,customer ,11310 Via Playa De Cortes , ,San Diego ,CA,92124,
(02) 6 ,1 , , , , ,22 ,1 ,0.00 ,160.46 ,160.46 ,0.00 , , , , , , , , ,1,1
(03)B130907540,5.41 ,1
(03)B130907550,5.41 ,1
(03)B130907560,5.41 ,1
(03)B130907570,6.04 ,1
(03)B065007550,1.72 ,2
(03)B065007560,1.72 ,6
(03)B519926530,4.66 ,13
(03)B519926550,4.66 ,12
(03)B560911200,2.14 ,1
(03)B560912500,2.14 ,1
(03)B095305750,3.65 ,1

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Advice On Table Design Which Will Allow Me To Enforce Integrity

Jul 23, 2005

Hi,I have two tables Table A and B, below with some dummy data...Table A (contains specific unique settings that can be requested)Id, SettingName1, weight2, lengthTable B (contains the setting values, here 3 values relate to weightand 1 to length)Id, Brand, SettingValue1, A, 1001, B, 2001, null, 3002, null, 5.3(There is also a list of Brands available in another table). No primarykeys / referential integrity has been setup yet.Basically depending upon the Brand requested a different setting valuewill be present. If a particular brand is not present (signified by anull in the Brand column in table B), then a default value will beused.Therefore if I request the weight and pass through a Brand of A, I willget 100If I request the weight but do not pass through a brand (i.e. null) Iwill get 300.My question is, what kind of integrity can I apply to avoid the userspecifying duplicate Ids and Brands in table B. I cannot apply acomposite key on these two fields as a null is present. Table B willprobably contain about 50 rows and probably 10 of them will be brandspecific. The reason its done like this is in the calling client code Iwant to call some function e.g.getsetting(weight) .... result = 300Or if it is brand specificgetsetting(weight,A) ..... result = 100Any advice on integrity or table restructuring would be greatlyappreciated. Its sql 2000 sp3.Thanksbrad

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Large Volumes Of Varchar Data - Design Advice

Jul 6, 2006

Hello all,

I have recently been task with rewriting a database that holds large volumes of data, whilst ensuring that query can be run in optimal time. Having never really delved into this sort of thing before, I hoped you guys might be able to offer some advice and guidance.

The design I have inherited is based around 2 main tables:

[captured_traps]
[id] [int] IDENTITY (1, 1) NOT NULL
[snmp_version] [int] NULL
[community_name] [varchar] (255)
[packet_type] [varchar] (50)
[oid] [varchar] (500)
[source_ip] [varchar] (15)
[generic] [int] NULL
[specific] [int] NULL
[time_stamp] [varchar] (15)
[trap_entered] [datetime] NULL
[status] [int] NULL

[captured_varbinds]
[id] [int] IDENTITY (1, 1) NOT NULL
[captured_trap_id] [int] NOT NULL
[varbind_oid] [varchar] (500)
[varbind_text] [varchar (500)

The relationship between the two tables is on the "captured_traps (id)" to "captured_varbinds (captured_trap_id)". Currently the "captured_traps" table contains around 350 million rows, the "captured_varbinds" table contains around 900 million rows.

Now as you can probably gather this model runs like a....well it sort of hobbles more than runs hence the need to redesign.

My current thoughts on this are:

- Normalising all varchars - there is alot of duplicate values in most of the varchar fields.
- Full Text Indexing

However beyond that I am not sure which route to go down. After googling for most of today I have come across a number of "solutions" however I do not want to go steaming down the track of one of these to discover that it is fatally flawed somewhere.

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DB Design :: Database Design For Matrix Representation

May 13, 2015

I have a scenario like below

Product1
Product2 Product3
Product4 Product5
Product1 1
1 0 0
1
Product2 1
1 0 0
1
Product3 0
0 1 1
0
Product4 0
0 1 1
0
Product5 1
1 0 0
1

How to design tables in SQL Server for the above.

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Database Design/query Design

Feb 13, 2002

Ok, I'm doing a football database for fixtures and stuff. The problem I am having is that in a fixture, there is both a home, and an away team. The tables as a result are something like this:

-------
Fixture
-------
fix_id
fix_date
fix_played

----
Team
----
tem_id
tem_name

-----------
TeamFixture
-----------
fix_id
tem_id
homeorawayteam
goals

It's not exactly like that, but you get the point. The question is, can I do a fixture query which results in one record per fixture, showing both teams details. The first in a hometeam field and the second in an away team field.

Fixture contains the details about the fixture like date and fixture id and has it been played

Team contains team info like team id, name, associated graphic

TeamFixture is the table which links the fixture to it's home and away team.

TeamFixture exists to prevent a many to many type relationship.

Make sense? Sorry if this turns out to be really easy, just can't get my head around it at the mo!

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Aug 18, 2015

I would like to create a table called product. My objective is to get list of packages available for each product in data grid view column while selecting each product. Each product may have different packages type (eg:- Nos, CTN, OTR etc). Some product may have two packages and some for 3 packages etc. Quantity in each packages also may be differ ( for eg:- for some CTN may contain 12 nos or in other case 8 nos etc). Prices for each packages also will be different that also need to show. How to design the table..

Product name :
Nestle milk |
Rainbow milk
packages :
CTN,OTR, NOs |

CTN, NOs
Price:
50,20,5 |
40,6

(Remarks for your reference):CTN=10nos, OTR=4 nos
| CTN=8 Nos

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Advice Please

Sep 21, 2007

Hello
Which is better and faster?? and WHY????Writing Select Statement with joins in Stored procedure, or creating view and calling it from stored procedure (select * from view)..

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Jan 13, 2004

Hi

Dont laugh but...

I am not entirely ignorant to web technologies, and best practices but i am having a bit of a planning dylema.

My company has a well established SQL 2000 database with windows application which has been created by myself, what i am planning on doing is creating a web site, using asp.net and publishing some of the information, so that our clients may use it, and stop pestering us on the phone. what i would like to know is what would be the best way forward, obviously i don't want to show them all our information, and don't want to put 5Gb worth of data onto a ISP website. What would you suggest i do?

Thanks in advance

Brad

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Help/Advice?

Jun 8, 2004

DECLARE @returnDay int
SELECT @returnDay = DatePart(day,GetDate())
If @returnDay = 8
BEGIN
select * from Hospitals left join Units ON Units.HospitalID = Hospitals.HospitalID where Units.HospitalID is null
RETURN
END

this is just a part of the procedure I am trying to create, I am getting hospitals that haven't submitted any data and wish to send them an email.

on the other hand I have two tables that have all the data for emailing to hospitals but are not linked to tables giving the list of hospitals

I have been advised to create a cursor(easier said then done) that will go through my list of records that need to receive an email

nothing going very well with that at the moment.

so I was hoping to see if somebody has any other suggestions for me.....

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Please Advice !

Apr 19, 2004

Hi,

I am trying to solve this procedure.

Let me try to explain it...I am getting DEGREEID from one of the SELECT query . I want to OUTPUT (ie , COUNT) from procedure,the number of departments with the degreeid, got from the above query.

With below procedure, Since an employee can have multiple DEGREEID , the cursor is giving OUPTUT ie, COUNT for the LAST Degreeid. Eventhough the previous DEGREEID dont have any DEPARTMENT...but only for the LAST DEGREEID...!

How can I solve this..... whether I can solve this with CURSOR or I have to use someother way...Please advice me !

DATA
-------
DEGREE_EARNED
---------------------
EMPID DEGREEID
------ ------------
201 12
201 3
201 250
202 3
202 10
203 17

DEPARTMENT
---------------
DEPID DEGREEID
------ ------------
10 1 12
111 250
111 12
121 3
121 12
121 250
------------------------------------

--------------------------------------------------------------------
DECLARE @vchid int
DECLARE testcursor CURSOR FOR

SELECT degree_id
FROM degree_earned WHERE emp_id= @empid

OPEN testcursor
FETCH NEXT FROM testcursor INTO @vchid

WHILE (@@FETCH_STATUS <> -1)

BEGIN
Select @outresult = COUNT(*)
from
department
where degree_id = @vchid

FETCH NEXT FROM testcursor INTO @vchid
END
--------------------------------------------------------------------

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SQL Advice

Mar 15, 2006

I tried to run a SQL script and i get the following message
quote:Error Message = Native SQL Error Code

[Microsoft][ODBC SQL Server Driver][SQL Server]Line 1: Incorrect syntax near ''.
SELECT name, id, description FROM products WHERE id=4INSERT INTO ''admin_login'' (''login_id'', ''login_name'', ''password'', ''details'') VALUES (252,''neo2'',''newpas5'',''NA'')--
Error Code : 350
F:InetpubParexeldefault.ihtml
iSQL dbname="Parexel" ALIAS="prod" SQL="SELECT name, id, description FROM products WHERE id=4INSERT INTO 'admin_login' ('login_id', 'login_name', 'password', 'details') VALUES (252,'neo2','newpas5','NA')--"
[Microsoft][ODBC SQL Server Driver][SQL Server]Line 1: Incorrect syntax near ''.SELECT name, id, description FROM products WHERE id=4INSERT INTO ''admin_login'' (''login_id'', ''login_name'', ''password'', ''details'') VALUES (252,''neo2'',''newpas5'',''NA'')--

Im new to SQL and i dont know what im doing

Also what does this mean

quote:iSQL dbname="admin" ALIAS="prod" SQL="SELECT name, id, description

What do SQL databases do and what would i need to do to enter data in to SQL such as a email address or cant that be done?

I think dbname is the database name ALIAS is that the table name?

im just trying to enter data in to my database database and i have no clue what im doing.

Iv read guides online but i get the above error 350

D

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Need Advice

Jul 18, 2006

Hi all,

My first request for help here even if I read this site quite often and got tons of usueful information. Thanx all

I have an application (VB 6) calling store procedure on a SQLServer 2000 DB. One of the table gives me headache. I wrote a simple store procedure to insert a record into that table. If I call the store procedure from query manager it works perfect but if I call it from VB it looks like to work (return from the execute fine) but then I query the table for that record and it'll just take time and then return time out. I have to stop the VB application and then query it again then it'll return no record.

I suspect the table being locked somehow but I check inside the VB app code and that's the only place the table is called. Further more I have hundred of store procedures being used that way and they're all ok. I indexed the table , no use either...

I am just short of ideas how to debug this...I'll need your advice :)

thank you

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Any T-SQL Advice?

Feb 6, 2006

Okay, given my newness to SQL, and the complexity of this query, I thought I'drun this by you for your opinion:SELECT DISTINCT a.WeekEnding, c.lastdate, c.numlate, b.totaldateFROM Accomplishment a LEFT OUTER JOIN(SELECT weekending, COUNT(weekending) AStotaldateFROM AccomplishmentWHERE (EmployeeID = 50)GROUP BY weekending) b ON a.WeekEnding =b.weekending LEFT OUTER JOIN(SELECT weekending, MAX(entrydate) ASlastdate, COUNT(weekending) AS numlateFROM accomplishmentWHERE employeeid = 50 AND entrydate >weekendingGROUP BY weekending) c ON a.WeekEnding =c.weekendingORDER BY a.WeekEndingWhat I'm trying to do is for each pay period find which ones the employeesubmitted a timesheet and which they were late (and if they were late, howmany of them). However, the query takes a good 5 seconds, and it seemsremoving the "entrydate > weekending" clause speeds things up to almostinstant, however it does ruin the count that I really want. No idea whythat makes such a difference..

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Advice???

Oct 28, 2006

hellooo

I have an Accounting system(vb.net 2003, SQL server 2000), every new year data is cleared, but i may use some data from previous years (such as liabilities)??

whats the best way to that ???

-Shall I create programmatically a new clone DB every year (new DB with same structure as previous year)
OR
-Shall I add a "year field" for tables in DB????

knowing that data will keep growing every year??????

whats the best solution, knowing that i dont want the end user of my application to do anything manually, such as creating DB ......

Thank you

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Jul 11, 2007

I have a couple of files that I have that are comma seperated, and am looking for the best way to take those files, but them in a temp location to run some sql up against, and than update or insert a production sql database based on a SP i have written that takes a number of variable. I have played around with using the recordset destination and defining all the variables and than using a for each loop but seem to be stuck. Somewhat new to the whole programming field, and to be honest, seems a little intimidating with the little I know of the programming side. Just looking for some thoughts.

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New To CE And Need Some Advice.

Aug 3, 2007

Hello,

I am new to the CE OS, SQL CE and mobile computing in general. I have been developing database applications using MS products ever since Windows 3.11 and Visual Basic 1.0. I have used MS Access and SQL Server since they were first released. But, I have never worked with Windows CE or any of the mobile OSs or with SQL CE or SQL Mobile.

We now have a project that requires us to develop a database application on handheld devices using the CE 4.2 and CE 5.0 OSs.We will be using CF 2.0, VS 2005 and SQL 2005 for our development environment.

My questions are:
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2. Is SQL CE 3.0 (Sql 2005 Mobile) available for other than Laptop and Tablet use? When i finaly got to the download page for this version there was verbiage there that suggested it was not available for smart devices.

3. What is a good source of info to resolve these questions? I am using the MSDN areas for CE and SQL Mobile but haven't really found what I need to get started. Any suggestions on forums, books, articles, blogs, etc... would be greatly appreciated.

I know these are very broad questions but I want to get some advice from the experienced before going to far here.

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Jun 1, 2007

I just want to ask for any good advice here ragarding my project. I'm planning to create a program that will use an sql server as a database. I have 3 branches and I need the branches to be updated always when they create any transaction or changes. The sql server will be installed in a PC with Windows Server 2003 and with a public IP. the question is can I access the sql server from other branches by using the public IP of the ServerPC thru the Internet? If yes, how? if no, is there a best way to do this updating method?

Thanks!

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Mar 6, 2008

Hi,

I am totally new to SQL and need to ask some basic questions.

Can anybody tell me if SQL 2005 will run ok on Windows Server 2008 32bit and/or 64bit.

Also, we are currently planning to implement OCS 2007 and we are considering running it on Windows Server 2008 32bit with SQL 2005. Does anyone know if this combination is possibleand if not what implementation should we be looking at.

Thanks for your time,

Cheers,
Ian.

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Aug 9, 2007

Hi everyone,

i wonder if any one can give me some advice.

here is my situation, i have a central database server that contains all the data, running in an intranet, the client application, which is a thick client containing most of the biz logics is installed on a laptop,

i m required to develop a solution so that when the client application is disconnect to the database server (e.g. the laptop is taken away somewhere) the application can still work and when the client application gets connect to the database server again the application will be able to synchronize changes with the database and update all the changes. and i m not allow to develop a web-base application

my initial thinking is to use merge replication, however, i m conerning with the performance on the laptop if i have to install sql server on the laptop.

is there any other approach that can still achieve the requirement and have a better performance?

thanks a lot in advance.

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Feb 27, 2007

Hello,Consider I have a String:Dim MyString As String = "Hello"or an Integer:Dim MyInteger As Integer = 100or a class which its properties:Dim MyClass As New MyCustomClass
MyClass.Property1 = "Hello"
MyClass.Property2 = Unit.Pixel(100)
MyClass.Property3 = 100Or even a control:Dim MyLabel As Label
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Mar 28, 2007

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Jun 1, 2007

Hi everyone,
My hoster hosts asp.net but does not yet support sql 2005 only sql 2000 and access I want to use either of the starter kits. I am confused on what is needed to make the changes to make either sql 2000 or access work. I know enough that the connection strings will need to change my concern is code. Is there strings that I will need to find and change in the application. I sure would appreciate any and all advice. Thank you for your help.
DKB

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Database Advice

Dec 8, 2007

Hi,I recently contacted my hosting company's customer support about my databases not working - saying that I use sql express (which they support).The guy recommended:
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is because, sql express is built for development environment. When you
are in development environment, you are accessing everything with
administrator permission. However, in live hosting environment (when
there are differnet kind of permission restrictions), sql express often
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Mar 15, 2008

Hi, I just started learning ASP.NET this week and have watched a mountain of videos from this website which has helped me alot However I have been stuck on a problem for 2 days now. I have created an SQL database with the Following 2 tables: USERS COMPUTERSUserid Computerid firstname Useridsecondname Manufacturer Model I have made a relationship between the 2 tables. I then created a dataset with the following query:SELECT COMPUTERS.Computer_ID, COMPUTERS.Manufacturer, COMPUTERS.Model, USERS.First_Name, USERS.Last_Name FROM COMPUTERS INNER JOIN USERS ON COMPUTERS.User_ID = USERS.User_ID I however do not get the option in my grid view when i output this data, to UPDATE. The best i have found from google is that i need to use subqueries and not innerjoins but i just cant seem to get my head around them, please help as i feel my head may just explode if i think about this or try any more ways to get this to work :D

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