How-do-I: Add Records (multi-tables) In A Normalized Database
Aug 16, 2007
Hi there -
First of all I think of myself as a software developer and by no means a database expert. So I am posting a question here hoping that someone will lead me in the right direction.
I am somewhat following the database diagram from AdventureWorks with my own "normalized" database and have a question on how to update the table(s).
Here is my situation:
Table: Client
ClientID (PK)
Name
...
Table: Address
AddressID (PK)
AddressLine1
AddressLine2
City
...
Table: AddressType
AddressTypeID (PK)
Name
...
Table: ClientAddress
ClientID (PK1)
AddressID(PK2)
...
The tables should be referenced properly, etc... So my question is, when I add a new Client record, how and when do I update the Client table, Address table and ClientAddress table? If my PK on the Client and Address tables is an autoincriment, do I need it before I can update the ClientAddress table? If so, what do I have to look for, or how do I get the newly created ID to update the ClientAddress?
Is this making any sense? - I'm a little lost/confused. So if anyone can provide me links to where I can learn more about stuff like this and/or post some ideas/solutions, I would greatly appreciate it. Also, if I am not clear on my issue, please ask and I will see if I can clarify it more.
Your help is appreciated in advance!
Bob
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Apr 17, 2006
Hello,
I am pretty new to SSIS, so please excuse me if this is a trivial question.
I have a denormalized database table in an Access database that I need to import into several different tables in a SQL 2005 database. You can think of the Access table as a CustomerOrders table. For example customer related information (i.e. CustomerName, CustomerID, etc...) is repeated with each record in the Access table. When this data gets moved to the SQL 2005 database, I need to insert one record for each distinct CustomerName/Customer ID record into a Customers table. I then need to insert and link every "Order" record into an "Orders" table.
I am sure that this is probably a pretty common task, but I have not found any examples or articles explaining this particular situation. What ways can this be done?
I was thinking I need to loop through each DISTINCT Customer record in the Access (source) table and insert a Customer record into the destination database's Customer table. I would then need to iterate through each row of the Access (source) table and "Lookup" the appropriate CustomerID/Key Field and insert an "Order" record.
The Access table contains over 75,000 rows of data. I am looking for the most appropriate way of doing this with SSIS (so that I don't have to write a custom application to do this!). Any help, input, links, articles, etc. is appreciated!!
TIA
-Brian
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May 7, 2004
Hello, everyone:
Some tables werer sent from customer. They ask to check if these tables have been normalized. How to check them? Thanks a lot.
ZYT
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Feb 23, 2007
Dear Experts,When I use a single table I can easily use constraints to enforce mybusiness logic, but what do I do when I normalize a single table intomultiple tables.For example, imagine that my initial table has the columns ID, Name,Salary with the constraint that Salary is not NULL. Now imagine thatI break this into two tables, one with ID and Name and another with IDand Salary. I would like to have a constraint that prevents thecreation of a row with (ID,Name) in the first table unless acorresponding row in the second table is also created.I can enforce this logic with triggers, but it looks ugly and isfairly brittle. Is there a better way or is this the dark side ofnormalization?Thanks.
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Jul 23, 2007
Ok, I'm fairly new to .NET and even newer to the whole database concept. But, don't run away yet, I'm no idiot and I shouldn't have too hard of a time understanding your responses if you're kind of enough to give them. That being said, here's my dilemma:I'm trying to make a database of all the movies I own, the actors in them and the genre (s) they belong to. I have a set of tables that are in the 2NF (I think). I have a movies table, an actors table, a genres table, and two tables called movies_actors and movies_genres with primary-foreign key relationships to pull it all together (e.g. movie_id 1 has two entries in movies_genres, one for Action and one for Drama). My problem arises that when execute my monster query to pull ALL the data on one movie, I get a row returned for every combination of Genres and Actors in a movie. Example:movie_id movie_title comments actor_first actor_last genre_name1 Casino blah blah Robert DeNiro Action1 Casino blah blah Robert DeNiro Drama1 Casino blah blah Joe Pesci Action1 Casino blah blah Joe Pesci Drama And here's the query that produced that:1 SELECT movies.movie_title, movies.comments, actors.actor_first,
2 actors.actor_last, genres.genre_name
3 FROM movies INNER JOIN movies_actors ON movies.movie_id = movies_actors.movie_id
4 INNER JOIN actors ON movies_actors.actor_id = actors.actor_id
5 INNER JOIN movies_genres ON movies_genres.movie_id = movies.movie_id
6 INNER JOIN genres ON movies_genres.genre_id = genres.genre_id
So, I want to put all the actors for one movie into the same cell in the datagrid (same with the genres) and still keep it sortable by actor or genre. Is this possible with the .NET 2.0 datagrid? Do I have some fundamental misunderstanding of how my tables should be structured? Am I just really far off and acting like a n00b?
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Oct 26, 2001
I have an allergy table which has a patientid and an allergy id. i would like to create a view(or SQL statement) that will give me a crosstab of a patient and there allergies(like below)
PATID ALLERGY1 ALLERGY2 ALLERGY3 etc
100 MCS DAC004 DAC003
200 MCS DAC004
300 MCS DAC004 DAC003
The patients have from upto 9 allergies(but some may only have one or 2). Is there a way to do this?
Thanks
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Apr 14, 2015
I have a requirement to provide data in a denormalized form from normalized tables. Working in SSIS.
I have two tables: EmployeeCountry and Country.
EmployeeCountry
EmployeeId (PK)(FK)
CountryId(PK)(FK)
Country
CountryId (PK)
CountryName
There will only be a max of 3 Country entries for each Employee. So I want to select the EmployeeId and get the three CountryIds so it would look like this:
Employee
EmployeeId
CountryId1
CountryId2
CountryId3
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May 20, 2015
I normalized the below tables but I am finding it difficult to copy data to the new tables. How do I copy data from existing table to the normalized tables? see the table structure below and other supporting information:
SKU_DATA(SKU,SKU_Description,Department,Buyer) Note: this table already has data in it.
CREATE TABLE SKU_DATA (
SKU
Integer NOT
NULL,
[code].....
The table structure above have two three determinants( SKU,SKU_Description and Buyer). SKU and SKU_Description are candidate keys. Primary key is SKU.
Normalization : SKU_DATA(SKU,SKU_Description, Buyer)
BUYER(Buyer,Department)
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Apr 12, 2007
Hi. I have a project I need to complete and I really don't know the first step I should take. Basically, we have a case management system that is normalized for the most part except for one major flaw: the clients table. Whenever we add a new case, we have to add the customer's name/address/phone etc. all over again. I would like to redo this current setup so we have one table just for clients and another table just for cases, so we don't have all this double entering all the time. Is there an easy way to do this or could someone point me in the right direction? It's on a SQL Server 2000 database. Thanks for your help!
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Sep 23, 2014
Disaster Recovery Options based on the following criteria.
--Currently running SQL 2012 standard edition
--We have 18000 databases (same schema across databases)- majority of databases are less than 2gb-- across 64 instances approximately
--Recovery needs to happen within 1 hour (Not sure that this is realistic
-- We are building a new data center and building dr from the ground up.
What I have looked into is:
1. Transactional Replication: Too Much Data Not viable
2. AlwaysOn Availability Groups (Need enterprise) Again too many databases and would have to upgrade all instances
3. Log Shipping is a viable option and the only one I can come up with that would work right now. Might be a management nightmare but with this many databases probably all options with be a nightmare.
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Jul 27, 2015
I have a CRM database that has a lot of tables and would like to be able to extract the last 'x' records in descending order from each table based on a common a field 'modifiedon' that is in every table and is auto populated by the system.
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Jun 25, 2007
Hi, all experts here,
I encontered a problem which did not allow me to select any thing from the temparary tables of the tempdb database. (e.g one of the temparary tables is #239E4DCF), why is that and how can we solve this problem? As I urgently need to look at this tempdb database, it is full. I am looking forward to hearing from you and thanks a lot in advance for your help.
With best regards,
Yours sincerely,
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Mar 27, 2007
I am new to Reporting Services and hope that what I am looking to do is within capabilities :-)
I have many identical schema databases residing on a number of data servers. These support individual clients accessing them via a web interface. What I need to be able to do is run reports across all of the databases. So the layout is:
Dataserver A
Database A1
Database A2
Database A3
Dataserver B
Database B1
Database B2
Dataserver C
Database C1
Database C2
Database C3
I would like to run a report that pulls table data from A1, A2, A3, B1, B2, C1, C2, C3
Now the actual number of servers is 7 and the number of databases is close to 1000. All servers are running SQL2005.
Is this something that Reporting Services is able to handle or do I need to look at some other solution?
Thanks,
Michael
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May 7, 2007
I'm trying to add records from a table in DBF format (created with Visual FoxPro) into an SQL table created with SQL Server 2005.
I first converted the dbf file into an ascii file and then in the Query Editor in the SQL Server I typed:
use [c:developesqlsqldatapsw.listener]
append from 'c:developesqldatalistener.txt' type sdf
goand then I pressed F5. I get an error that says:
Msg 911, Level 16, State 1, Line 1
Could not locate entry in sysdatabases for database 'c:developesqlsqldatapsw.listener'.No entry found with that name. Make sure that the name isentered correctly.
I checked in the directory c:developesqlsqldata and the filepsw.mdf is there and when I look in the psw database, the tablelistener is also there.
Could someone tell me what is going wrong? Also, how do Iappend the whole dbf table onto an SQL table. there's about6000 records.
Thanks.
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Mar 13, 2007
-- declare table declare @Table1 table(ID int, Value int )-- Insert sample data provided into tableinsert into @Table1select 1 , 2 union allselect 2 , 1 union allselect 7 , 2 -- declare table declare @Table2 table(ID int, Value int )-- Insert sample data provided into tableinsert into @Table2select 1 , 2 union allselect 5 , 1 union allselect 3 , 2 -- declare table declare @Table3 table(ID int, Value int )-- Insert sample data provided into tableinsert into @Table3select 1 , 2 union allselect 2 , 1 union allselect 3 , 2 -- declare table declare @Table4 table(ID int, Value int )-- Insert sample data provided into tableinsert into @Table4select 5 , 2 union allselect 2 , 1 union allselect 10 , 2 /*Is there anyway I can write one sql query which will give me the following result:IDs = All unique ID from all tablesSumOfAllValueFromAllTables =for the same ID, value from Table1+for the same ID, value from Table2 + so on ...IDs - SumOfAllValueFromAllTables===============================1 - 62 - 33 - 45 - 37 - 210 - 2*/--I have tried by the following way, but for more tables, it is becoming complicated, because I have 12 tables.--Is there any better way to do it? Thanks for the help.select coalesce(t1.ID,t2.ID) as IDs, coalesce(sum(t1.value),0) +coalesce(sum(t2.value),0) as SumOfAllValueFromAllTablesfrom @Table1 t1full join @Table2 t2 on t1.id=t2.idgroup by t1.ID,t2.IDorder by IDs
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Oct 12, 2014
I have one scenario
Table
Col1. Col2
1. A,b,c,df,ghf
2. C,b
3. B
Output should be
Col1. Col2
1. A
1. B
1. C
1. Df
1. Ghf
2. C
2. B
3. B
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Jun 12, 2007
Here I need to create a view by using following criteria, there is 3 tables which are Tbl.adminCategory, tbl_adminuser, tbl_outbox respectively. I am working on 2000SQL server
I am treing to create view as following but getting some error.
SELECT tbl_adminuser.adminUserName, tbl_AdminCategory.Name,
COUNT(tbl_outbox.msgUserID),
FROM tbl_adminuser INNER JOIN
tbl_AdminCategory ON
tbl_adminuser.adminUserID = tbl_AdminCategory.CatID INNER JOIN
tbl_outbox ON tbl_AdminCategory.CatID = tbl_outbox.msgUserID
AND tbl_outbox.msgUserID <> 0
GROUP BY tbl_outbox.msgUserID
But I am getting error pls correct the view,
thanks to all
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Apr 22, 2004
Hi,
Currently, I'm using the following steps to migrate millions of records from Foxpro tables to SQL Server tables:
1. Transfer Foxpro records to .dat files and then bcp to SQL Server tables in a dummy database. All the SQL tables have the same columns as the Foxpro tables.
2. Manipulate the data in the SQL tables of the dummy database and save the manipulated data into the SQL tables of the real database where the tables may have different structure from the corresponding Foxpro tables.
I only know the following ways to import Foxpro data into SQL Server:
#1. Transfer Foxpro records to .dat files and then bcp to SQL Server tables
#2. Transfer Foxpro records to .dat files and then Bulk Insert to SQL Server tables
#3. DTS Foxpro records directly to SQL Server tables
I'm thinking whether the following choices will be better than the current way:
1st choice: Change step 1 to use #2 instead of #1
2nd choice: Change step 1 to use #3 instead of #1
3rd choice: Use #3 plus manipulating in DTS to replace step 1 and step 2
Thank you for any suggestion.
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Feb 6, 2004
Hi,
I am developing reporting application (access project) which will be used in multi user environment.
Here is what I have:
1 SQLServer database for many users
Each report will be based on:
stored procedure which creates a table filtered for specific dates predefined views will use the newly generated table to show results to the client. However, if more than 1 person runs reports results will not be accurate if each person specified different dates because they will look at the same table and results will match only for a user who called the stored procedure last.
what can you recommend - how to report in multi user environment?
Many thanks
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Jul 20, 2005
Hi, all:This is probably a simple problem, but, as an SQL newbie, I'm having alittle trouble understanding multi-joins and subqueries.I have the following tables and columns:MemberTable-----MemberID (primary key)MemberNameAddressCountryFoodsTable------FoodID (primary key)FoodNameMusicTable-----MusicID (primary key)MusicNameMoviesTable-----MoviesID (primary key)MoviesName....and their linking tables...Members2FoodsTable-----MemberID (foreign key)FoodsID (foreign key)Members2MoviesTable-----MemberID (foreign key)MoviesID (foreign key)....and so forth.Now what I'm trying to do is retrieve a specific MemberID, his address info(from the Members table), and get a listing of his favorite Movies, Foods,Music, etc. I know I probably need to JOIN tables, but where do I JOIN thetables? Do I have to JOIN the various Music/Foods/Movies tables or is itthe Music/Members2Music and Foods/Members2Foods, etc. tables? And I assumeI would probably need to perform a subquery somewhere?I realize I'll need to first filter the Members, Members2Music,Members2Foods, etc. tables by the MemberID, and afterwards, retrieve alisting of the actual Music/Foods/Movies names. I'm just confused how to dothat. (By the way, I have a total of 10 other tables or in addition toMusic, Foods, etc. so it's a lot of table JOINing.)If someone could please help me out with the actual SQL coding, I'd reallyappreciate it!Thanks for the help!J
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Sep 8, 2015
I am new to programming trying hard to learn. I made a code for Views in mssql for the 2 tables below:I am wondering if I could make it 3, 4 or more tables at the same time. How can incorporate in the following codes I made.
Create View vwEmployeeInfoByGender
as
Select FirstName, MiddleName, FamilyName, Gender, BirthDate,
MaritalStatus
from tblEmployeeInfo
join tblGender
on tblEmployeeInfo.GenderID
= tblGender.GenderID
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Feb 6, 2007
I'm trying to list out my a multi-value parameter in a table or list. Is this possible?
So far I've tried the simple do-it-the-same-way-as-a-dataset approach, and that doesn't work because it comes back with an error saying I need a dataset in my table.
I then tried creating a dataset that's identical my multi-value parameter, but I was stumped when it came to creating the correct SQL. I am able to pull the last value of my parameter into a dataset with a simple SELECT @MyParam query, but that's not going to cut it...
Any more ideas? Thanks!
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Apr 6, 2008
Hi,
I already submitted this type of question before and i receive reply. But unfortunately i found out errors when performing on my system.
My problem regarding to this one:
Suppose i have two databases with same tables with different records and I would like to copy the records from one database to another data and vice-versa. So that both the tables contains same number of records inside the tables.
Example:
Database1 (EmployeeTable) contains 6 records.
Database2 (EmployeeTable) contains 10 records.
It should copy only those records which is not present in each other database. No duplicate records.
Before i was recommend to use Primary key, if it is not present use index.
Hope this time i could solve my problem.
Thanks.
Kashif Chotu
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Sep 24, 2007
I'm working on a couple projects and I've recently been trying to make everything fully normalized so updates are easier and I'm just wondering if there's a standard way to query and update normalized tables.
For example:
If I have table People with columns ID, FirstName, LastName, Height, Weight, ShoeSize, I can normalize that into two tables. Table People has ID, FirstName and LastName. Table PeopleDetails has PeopleID (FK), Property and Value. That way i can add more properties later right at the presentation layer if I like. Essentially I moved the data from being horizontal to being vertical.
But doing a simple search for people means I have to search the details table and return a LOT more records (one each for Height, Weight and ShoeSize) not to mention any more details I might add later. With a lot of details, it seems like your performance would take a big hit and your code would get really complicated as your looping through a vertical dataset to find the properties you want. Or is there some other standard way of doing that?
I'm just hoping that someone else has solved these problems and there's a standard set of functions out there for selecting and updating this kind of DB structure. Anyone?
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Jul 20, 2005
I'm trying to generate a normalized XML document out of SQL serverthat reflects the datastructure of a table.Eg. This is what I would like to get<table name='MtFeedback'><field name="MtFeedbackIy" type="int"/><field name="Title" type="varchar" size="50"/><field name="FirstName" type="varchar" size="50"/><field name="Surname" type="varchar" size="50"/><field name="insertedon" type="datetime"/></table>I have tried two ways of and these are the results. The 1st techniqueis closeselect1 as Tag,null as Parent,'' as [table!1],null as [field!2!table-name],null as [field!2!name],null as [field!2!type],null as [field!2!size]UNION ALLselect2 as Tag,1 as Parent,null as [table!1],i.TABLE_NAME as [field!2!table-name],i.COLUMN_NAME as [field!2!name],i.DATA_TYPE as [field!2!type],i.CHARACTER_MAXIMUM_LENGTH as [field!2!size]frominformation_schema.columns iwheretable_name = 'MtFeedback'FOR XML EXPLICIT<table><field table-name="MtFeedback" name="MtFeedbackIy" type="int"/><field table-name="MtFeedback" name="Title" type="varchar"size="50"/><field table-name="MtFeedback" name="FirstName" type="varchar"size="50"/><field table-name="MtFeedback" name="Surname" type="varchar"size="50"/><field table-name="MtFeedback" name="insertedon" type="datetime"/></table>The 2nd technique fails totally.select1 as Tag,null as Parent,i.TABLE_NAME as [table!1!name],null as [field!2!name],null as [field!2!type],null as [field!2!size]frominformation_schema.columns iUNION ALLselect2 as Tag,1 as Parent,null as [table!1!name],i.COLUMN_NAME as [field!2!name],i.DATA_TYPE as [field!2!type],i.CHARACTER_MAXIMUM_LENGTH as [field!2!size]frominformation_schema.columns iwheretable_name = 'MtFeedback'FOR XML EXPLICIT<table name="MtFeedback"/><table name="MtFeedback"/><table name="MtFeedback"/><table name="MtFeedback"/><table name="MtFeedback"/><table name="MtFeedback"/><table name="MtFeedback"/><table name="MtFeedback"/><table name="MtFeedback"/><table name="categories"/><table name="categories"/><table name="products"/><table name="products"/><table name="products"/><table name="descriptions"/><table name="descriptions"/><table name="descriptions"/><table name="syssegments"/><table name="syssegments"/><table name="syssegments"/><table name="sysconstraints"/><table name="sysconstraints"/><table name="sysconstraints"/><table name="sysconstraints"/><table name="sysconstraints"/><table name="sysconstraints"/><table name="sysconstraints"/><table name="dtproperties"/><table name="dtproperties"/><table name="dtproperties"/><table name="dtproperties"/><table name="dtproperties"/><table name="dtproperties"/><table name="dtproperties"><field name="MtFeedbackIy" type="int"/><field name="Title" type="varchar" size="50"/><field name="FirstName" type="varchar" size="50"/><field name="Surname" type="varchar" size="50"/><field name="insertedon" type="datetime"/></table>Cheers Dave
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Nov 12, 2012
I am trying to exclude records from a table where the ID column is the same but the Mail code Column is multi-valued.For Example: (the table looks like....)
ID Mail_code
111111 XNT
111111 N11
111111 XNC
222222 XNC
222222 XNL
333333 XNC
So, if there is any ID that has a value of XNC, I want to exclude the ID all together from my output regardless of the other values.
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Feb 12, 2007
Jamie writes "I trying to write a SQL solution using embedded and/or dynamic SQL to convert a matrix file to a normalized format."
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Feb 28, 2008
Hi
I am new to SSIS. Probaly What I am asking is the simple one. But I dont know. I have a requirement. My Data source is Excel file and Destination is SQL Server . Excel file consist around 10k unnormalized rows which should be loaded to the multiple normalized master and child tables into the destination with the Primary key (identity column) and foreign key constrains. Even sometimes package should check for destination database table for matching Source column (Excel) code with the lookup table code (destination lookup table) and get the Primary key of Lookup table and put it into the destination table. Please help me the way to find the solution for this
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Aug 21, 2007
I'm working with a database that is poorly normalized and am doing my best to increase the speed of our queries (changing the database itself is not an option right now). Any help with the following situation would be very much appreciated.
There are two tables involved, described below.
DataTable:
Code Snippet
CodeA char(4),
CodeB char(4),
CodeC char(2),
ColA float,
ColB float,
ColC float,
...
ColZ float
NameTable:
Code Snippet
Abbr char(2),
FullName varchar(50)
In the DataTable, the columns named ColA, ColB, ColC, etc., are described in the NameTable where Abbr would be A, B, C, etc., and FullName would be a "nice" text version describing what's stored in that column. For instance, a record in the NameTable might include Abbr = 'A' and FullName = 'Computer Science', and that means that ColA in the DataTable refers to 'ComputerScience'.
The table I'm trying to optimize the creation of in our ASP.NET application needs to have column headings that could be retrieved like this:
SELECT DISTINCT CodeB, CodeC FROM DataTable WHERE CodeA = @CodeA
(Note that CodeC is really just a different representation of CodeB--think 4-digit year vs. 2-digit year--for any given CodeA.)
The row headings for the table could be retrieved like this:
SELECT FullName FROM NameTable
The cells of the table at any given intersection of a row heading and a column heading can be retrieved like this:
SELECT Col? FROM DataTable WHERE CodeA = @CodeA AND CodeB = @CodeB (this selects a single value)
Where the ? of Col? is determined by the Abbr version of FullName shown in the row heading, and @CodeB is determined by CodeB from the column heading.
Right now this table is generated using a lot of loops in the code of the page that require it to query the database for nearly every cell in the table. Even with this poor database design, there has to be a better way than that. I'm hoping there is a way to create a stored procedure that uses temporary tables and joins, or views, or something like that to create the table on the SQL Server and just send the data to the ASP.NET page in a form that can be directly databound to a GridView.
Thanks in advance for any help!
-Mathminded
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Aug 27, 2002
Thanks for reading.
This is pretty long, hopefully it isn't rambling.
I'm building a system that imports data from several source, Excel files, text files, Access databases, etc. using DTS. The entire process revolved around MS SQL Server, by the way.
I figured I would create denormalized tables that mirror the Excel and flat files, for example, in structure, import data to those, clean up and remove duplicates there, then break those out into my normalized table structure later.
Now I've finished the importing part (though this is going to happen once a week) and I'm onto breaking up the denormalized tables.
I'm hesitating because I'm not sure I've made the best decisions in terms of process, etc.
I've decided to use cursors to loop over the denormalized tables and use batch insert statements to push data out to the appropriate tables.
Any comments? Suggestions? All is welcome.
I'm specifically interested in hearing back on the way I've set up the intermediate, denormalized tables and how I'm breaking them up using cursors (step 2 of the process below). Still, all comments are welcome. As are suggestions for further reading.
Thanks again...
simplified example
(my denormalized tables are 20 - 30 colums wide)
denormalized table:
===================
name, address, city, state, cellphone, homephone
normalized tables:
==================
tblPerson [PK_person, name, age, height, weight]
tblAddress [PK_address, FK_person, street, city, state, zip, addressType]
tblContact [PK_contact, FK_person, data, contactType]
I'm breaking up the denormalized tables like this (*UNTESTED*):
=================================================
DECLARE @vars.... (one for each column in my normalized table structure, matching size and type)
DECLARE myCursor CURSOR
FAST_FORWARD FOR
SELECT name, address, city, state, cellphone, homephone
FROM _DNT_myWideTable
INTO
WHILE @@Fetch_Status = 0
BEGIN
-- grab the next row from the wide table
FETCH NEXT FROM myCursor
INTO @name, @address, @city, @state, @cellphone, @homephone
-- create the person first and get the ID with @@IDENTITY
INSERT INTO tblPerson (name) VALUES (@name)
SET @personID = @@IDENTITY
-- use that ID to coordinate inserts across other tables
INSERT INTO tblAddress (FK_person, address, city, state, addressType)
VALUES(@person, @address, @city, @state, 'HOME')
INSERT INTO tblContact (FK_person, data, contactType)
VALUES(@person, @cellphone, 'CELLPHONE')
INSERT INTO tblContact (FK_person, data, contactType)
VALUES(@person, @homephone, 'HOMEPHONE')
END
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Jul 2, 2004
First of all, this is my initial thread here on dbforums. I come from the land of Broadband Reports and would like to say, Hello fellow DB enthusiasts. :)
I'm not a novice to relational databases (Access MDBs), but new to implementing a db via SQL SERVER (2000 in this case) and using Access Data Projects.
My partial db schema is as follows:
participants
---DID (pk) char(1)
---LID (fk - schools) char(4)
---studentLast varchar(50)
---studentFirst varchar(25)
Sample Data would be
010191M001 | 5671 | SPARKS | JONATHAN
030495F283 | 5671 | DYLAN | CYNTHIA
=====================================
enrollhist (insert/update trigger for enrollactive)
---EID (pk - autonumber) bigint(8)
---EMID (fk - enrollmode) int(4)
---DID (fk - participants) char(10)
---LID (fk - schools) char(4)
---enrollactive bit(1)
Sample Data would be
38173 | 4 | 030495F283 | 9003 | 0
38266 | 3 | 010191M001 | 5671 | 0
39022 | 6 | 030495F283 | 9003 | 0
39036 | 5 | 030495F283 | 9003 | 0
39044 | 4 | 030495F283 | 5671 | 1
39117 | 4 | 010191M001 | 5671 | 1
=====================================
enrollmode
---EMID (pk) int(4)
---mode varchar(25)
Sample Data would be
1 | RECEIVED
2 | WAITING
3 | PENDING
4 | ENROLLED
5 | DROPPED
6 | TRANSFERRED
10 | ORPHANED
11 | DENIED
=====================================
schools
---LID (pk) varchar(4)
---CTID (fk - caltracks) char(1)
---AID (fk - agencies) char(1)
---SDID (fk - schooldist) char(1)
---COID (fk - countydist) char(1)
---sitename varchar(25)
---sitetitle varchar(75)
Sample Data would be
5671 | 3 | 2 | 1 | 4 | ASCOT | ASCOT AVENUE
9003 | 2 | 1 | 4 | 1 | ROWAN | ROWAN AVENUE
2865 | 1 | 3 | 2 | 3 | BRIGHT | BIRDELEE BRIGHT
=====================================
caltracks
---CTID (pk) char(1)
---legend char(4)
---trktitle varchar(15)
---trkcnt int(4)
Sample Data would be
1 | 9030 | 90/30 | 4
2 | CON6 | CONCEPT-6 | 3
3 | SNGL | SINGLE TRACK | 1
=====================================
agencies
---AID (pk) char(1)
---legend varchar(4)
---agencytitle varvhar(50)
Sample Data would be
1 | CRYS | CRYSTAL STAIRS
2 | MAOF | MEXICAN AMERICAN FOUNDATION
3 | PATH | PATHWAYS
4 | CCRC | CHILD CARE RESOURCE CENTER
5 | CHSC | CHILDREN'S HOME SOCIETY OF CALIFORNIA
==========================================
THE REMAINING "FKs" FROM SCHOOL ARE SIMILAR, as is other tables and their relationships. The design of the foreign keys were made using sql and the keyword "REFERENCES" and "FOREIGN KEY."
My questions are: :confused:
(1) Is the use of FK as a Constraint any different than using an INDEX and how?
(2) Should I Alter the Tables to include CASCADING Up/Down?
(3) Are the use of CHARs Ok for the Keys?
(4) Have I over/under-normalized any of the relationships?
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Jul 20, 2005
I have a "source" table that is being populated by a DTS bulk importof a text file. I need to scrub the source table after the importstep by running appropriate stored proc(s) to copy the source data to2 normalized tables. The problem is that table "Companies" needs tobe populated first in order to generate the Identity ID and then usethat as the foreign key in the other table.Here is the DDL:CREATE TABLE [dbo].[OriginalList] ([FirstName] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,[LastName] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,[Company] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,[Addr1] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,[City] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,[State] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,[Zip] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,[Phone] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL) ON [PRIMARY]GOCREATE TABLE [dbo].[Companies] ([ID] [int] IDENTITY (1, 1) NOT NULL ,[Name] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL) ON [PRIMARY]GOCREATE TABLE [dbo].[CompanyLocations] ([ID] [int] IDENTITY (1, 1) NOT NULL ,[CompanyID] [int] NOT NULL ,[Addr1] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,[City] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,[State] [varchar] (2) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,[Zip] [varchar] (10) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,[Phone] [varchar] (14) COLLATE SQL_Latin1_General_CP1_CI_AS NULL) ON [PRIMARY]GOThis is the stored proc I have at this time that does NOT work. Ituses the last Company insert for all the CompanyLocations which is notcorrect.CREATE PROCEDURE DataScrubSP ASBegin Transactioninsert Companies (Name) select Company from OriginalListIF @@Error <> 0GOTO ErrorHandlerdeclare @COID intselect @COID=@@identityinsert CompanyLocations (CompanyID, Addr1, City, State, Zip) select@COID, Addr1, City, State, Zip from OriginalListIF @@Error <> 0GOTO ErrorHandlerCOMMIT TRANSACTIONErrorHandler:IF @@TRANCOUNT > 0ROLLBACK TRANSACTIONRETURNGOThanks for any help.Alex.
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May 25, 2006
I have a database schema that has an Address table used to store addresses for different entities such as Customers and Employees. I want to reuse the same Address record between different Customers and Employees without duplicating any address information. I'm not sure what the best approach might be.
Should have I have seperate stored procedures on the Address table that update and insert new addresses, where each Address record remains immutable once created? (So the update stored procedure actually creates a new Address record if the data changes). These stored procedures would then be invoked by business logic and used in tandem with stored procedures that act on Customers and Employees to ensure that no address records are duplicated.
Or should I create a view on a Customer joined with Address, and similarily with Employee and Address, and have stored procedures that act on these views and ensure that no Address records are duplicated. Should I use instead of triggers to override the behavior of insert and update on the view to achieve these?
I'm rather lost as to what direction I should take. Any help would be much appreciated, thanks!
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