Property Database Design Issue
Jan 4, 2006
Hi !!
I need some inputs for designing Property Database
Property Types:
Condo/Townhouse
Single Family Home
Multi Family Home
Rental
Property Features
Sq Ft
# Of floors
New Construction
Carpeted Floors
Hardwood Floors
Living Room
Formal Dining Room
# of Bedrooms
# of Bathrooms
Den/Office
Water : City or Private
Sewer: City or Septic
Family Room and more
Lot Features
Mountain View
Golf Course Lot
Golf Course View and More
Community Features
Boating
Golf
Gym
Swimming and More
Here is what I am thinking:
1) I probably don't need any table for Property Type as I can hard code them into Drop Down List
2) Water and Sewer feature can de coded into Drop Down List too
3) How rest of the table design should work?
Table called Property, Lot Feature, Community Feature, Property_Lot, Property_Community
Property Table has PropertyID (P1, P2, P3) and other Info
Lot Feature has Lot Feature ID (L1, L2, L3) and
Community Feature has (C1, C2, C3)
Property can have zero or More Lot Feature
so Property_Lot table will have:
P1, L1
P1, L2
P1, L3
P2, L3
P3, L1
Property can have zero or more Community Feature, so Property_Community
P1, C1
P2, C1
P2, C2
P3, C3
Is this right?
How do we design search query?
I think query will be dynamic query? correct?
Thanks !!!!
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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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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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Jun 16, 2006
I am having problems exporting data into a flat file using specific code page. My application has a variable "User::CodePage" that stores code page value (936, 950, 1252, etc) based on the data source. This variable is assigned to the CodePage property of desitnation file connection using Property expression.
But, when I execute the package, the CodePage property of the Destination file connection defaults to the initial value that was set for "User:CodePage" variable in design mode. I checked the value within the variable during runtime and it changes correctly for each data source. But, the property of the destinatin file connection doesn't change and results in an error.
[Flat File Destination [473]] Error: Data conversion failed. The data conversion for column "Column01" returned status value 4 and status text "Text was truncated or one or more characters had no match in the target code page.".
[DTS.Pipeline] Error: The ProcessInput method on component "Flat File Destination" (473) failed with error code 0xC02020A0. The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running.
If I manually update the variable with correct code page and re-run the ETL, everything works fine. Just that it doesn't work during run-time mode.
Can someone please help me resolve this.
Thanks much.
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Apr 17, 2008
Hi,
I developed a simple custom control flow component which has several read/write properties and one readonly property (lets call it ROP) whichs Get method simple returns the value of a private variable (VAR as string). In the Execute method the VAR has a value assigened. When I put the value of ROP or VAR into MsgBox I can see the correct value. However when I execute the component I can not see the value of the ROP in the property window. I see the property but its value is empty string. For example when I put a breakpoint to postexecute or check the property before click OK in a MsgBox I would expect that the property value would be updated in SSIS as well. Is there a way how to display correct values of custom tasks properties in property window?
Thanks for any hints.
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May 7, 2008
Untill recently I had a smooth running SSIS package,but suddenly it throws error syaing
"OnError,,,,,,,The result of the expression
"@[User:trTextFileImpDirectory] +"SomeTextStringHere"+ @[User:trANTTextFileName] +(DT_STR,30,1252) @[User:taging_Date_Key]+ "SomeTextStringHere"
" on property "ConnectionString" cannot be written to the property. The expression was evaluated, but cannot be set on the property."
I have child SSIS package running under a parent package (through execute package task)
I have few flat file connection managers in child package for text file import , in which I am building text file path dynamically at run time by assigning an expression in connection string property of connection manager.
The Expression is as follows
"@[User:trTextFileImpDirectory] +"SomeTextStringHere."+ @[User:trANTTextFileName] +(DT_STR,30,1252) @[User:taging_Date_Key]+ +"SomeTextStringHere"
Where @[User:trTextFileImpDirectory] is a variable which contains path of directory containg text
files.Value in this variable is assigned at runtime from parent package's variable,which in turns fetch
value from a configuration file on local server.
With my current configuration this path has been configured to some other server's directory over network ( I.e my package picks text files from some other servers folder over network)
While
"Some string here"+ @[User:trANTTextFileName]" part of file name string.
(DT_STR,30,1252) @[User:taging_Date_Key] Contain the date of processing ,value in this variable is also picked up at run time from parent package variable.
1) So can someone give me some insight into possible reason of failures.
2) Is it possible that problem arises if directory (from which I m picking text files) is assigned password or is there exist some problem in accessing forlders over network ?
3) Or there can be some problem in package configuration at design time( I.e where I m assigning value in variable from parent package vriables)?
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Jul 29, 2007
I am getting this error while selecting the properties of one database.
Property Owner is not available for Database '[TEST]'. This property may not exist for this object, or may not be retrievable due to insufficient access rights. (Microsoft.SqlServer.Smo)
Suddently this error started coming ? why ?
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Mar 3, 2007
Hi,
As per my understanding, if the user instance property is set to true for an express database then it is not multiuser/shared. A copy of the database is made for each user so he works on his private data. On the other hand, if user instance property is set to false then the express database is multiuser/shared. Thus different users will connect to the same instance of the database and changes by one user will be seen by the other users.
Now, if we use an express database with asp.net and our application is installed on IIS then it is mandatory for the express database to have the user instance property set to true. But we see that in this case when different users visit our website, the data they enter goes into the same common database, ie. all the users share the same common database, even though user instance is true for the express database.
Please shed some light to explain the correct functionality of the user instance property as related to the express database.
Regards, Sandy
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May 8, 2006
I have recently had the need to create a utility program to upgrade the schema of an existing database for users of my program at install time. I will be using SQL Management Studio to generate the change scripts the program will use, but I will need some kind of way to know what version of the database a user has installed.
After poking around in SQL Management Studio I found a place for "Extended Properties" on a database, and I thought this would be the perfect place to add a property called "SCHEMA_VERSION" to know what version of the database is installed.
I have no idea how to read and update this value in code though. Can someone provide a small example on how to read and update an extended property on a database? Any .NET language example is welcomed; C# is preferred. Thanks in advance!
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Oct 29, 2015
I actually work in an organisation and we have to find a solution about the data consistancy in the database. our partners use to send details to the organisation and inserted directly in the database, so we want to create a new database as a buffer database to insert informations from the partners then make an update to the main database. is there a better solution instead of that?
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Feb 24, 2006
Hello everyone,I have a webcontrol that uses database-structures alot, it uses the system tables in SQL to read column information from tables. To ease the load of the SQL server I have a property that stores this information in a cache and everything works fine.I am doing some research to find if there are anyway to get information from the SQL server that the structure from a table has changed.I want to know if a column or table has changed any values, like datatype, name, properties, etc.Any suggestions out there ?!
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Jul 23, 2005
I have a system that basically stores a database within a database (I'msure lots have you have done this before in some form or another).At the end of the day, I'm storing the actual data generically in acolumn of type nvarchar(4000), but I want to add support for unlimitedtext. I want to do this in a smart fashion. Right now I am leaningtowards putting 2 nullable Value fields:ValueLong ntext nullableValueShort nvarchar(4000) nullableand dynamically storing the info in one or the other depending on thesize. ASP.NET does this exact very thing in it's Session State model;look at the ASPStateTempSessions table. This table has both aSessionItemShort of type varbinary (7000) and a SessionItemLong of typeImage.My question is, is it better to user varbinary (7000) and Image? I'mthinking maybe I should go down this path, simply because ASP.NET does,but I don't really know why. Does anyone know what would be the benifitof using varbinary and Image datatypes? If it's just to allow saving ofbinary data, then I don't really need that right now (and I don't thinkASP.NET does either). Are there any other reasons?thanks,dave
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Aug 16, 2007
Hi All,Can u please suggest me some books for relational database design ordatabase modelling(Knowledgeable yet simple) i.e. from which we couldlearn database relationships(one to many,many to oneetc.....),building ER diagrams,proper usage of ER diagrams in ourdatabase(Primary key foreign key relations),designing smallmodules,relating tables and everything that relates about databasedesign....Coz I think database design is the crucial part of databaseand we must know the design part very first before starting up withdatabases.....Thanks and very grateful to all of you....Vikas
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Sep 27, 2007
Hi All,
I am designing database where few of the master tables will reside in different database or in case different server. Scenario is
Server "A" with Database "A" may host the "Accounts" table.
Server "B" with Database "B" may host the "Product" table.
I am designing database "Project" which will hosted in Server "A".
My application requires this master tables [readonly access] as data inserted in my application refers this tables. Also there are reports to be generated which refer this tables.
How do i design my database and sql queries?
I am thinking of approach of having equivalent tables created in my database and writing service which keep tables in my database in sync. This will ensure good perfomance during transaction and reports as they will need to refer this table locally as opposed to different database or different server.
Any thoughts on above approach?? or any better/standard way for such scenarios ?
Thanks in Advance. Your inputs will be of great help.
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Apr 12, 2007
Hello:
My client has a db with the following structure:
Online US Searchable Map of the 50 US States. Users search criteria is the following: Query records by selecting state, county, then record. Each County table has 10-20 tables. All databases combined = 500MB and TLogs = 100MB.
How would you re-design a relational DB where users could query data by state-county-record. Currenty the DB's are created by the County of each state which creates hundreds of DB's in SQLServer with no realtionship to each US state. What would be the best design to ensure good performance, data integrity and maintenance? Would you create 1 DB with all 50 states, create 4 DB's and divide by region(N,S,E,W), 50 DB's of each state or leave it as is with each county it's on DB? Any suggestions would be appreciated.
thx
rob
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Feb 15, 2007
Hello,
I have a group I'll call G4.
The header table row for G4 contains 3 textboxes containing the sums of the contents within G4. The header table row for G4 is visible while it's contents, including the G4 footer table row, is kept invisible until the report user drills down into the group.
When the report user drills down into G4 the footer table row becomes visible and the sums of the contents of the group are displayed for a second time.
At this point I want the sums in the header to be set to invisible when the sums in the footer are made visible by the drilldown.
When I try to reference the hidden property of textbox66 in the G4 footer in order to set the hidden property of header textbox57 in the G4 header I get to this point...
=IIF(reportitems!textbox66.
When it fails to give me an option of choosing the .Hidden property and instead only gives me a .Value.
If I complete the IIF statement manually so that it spells out .....
=IIF(ReportItems!Textbox66.Hidden = False, True, False)
...the report chokes on it.
So my question is, how do I reference the hidden property of one or more textboxes in a group to use as condition checks to set the hidden property of another textbox in that same group?
Thank you for any help you can provide. We are only now beginning to implement reporting services and I have not yet had the chance to research this in greater detail for lack of time.
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Oct 20, 2006
Hello, I am designing my first database with 5 tables for a demo project and am not sure if it works. an example below.2 of the many things I want visitors to the site to do is find a company by the industry sector they belong to,..andwhat sort of service or products they can supply. For instance a Employment agency maybe under professional services Table 1 Customer Customer_ID = primary key,,,, Sector_ID = Foreign keyComapany Name, Address, Phone, Postcode etcTabel 2 Industry SectorsSector_ID = primary key,,,,Customer_ID= foreign key banking, Education,Prof Services, etc Table 3 Trading ActivityTrading_ID = primary key,,,,Sector_ID = Foreign key, Products_ID= FkEmployment Agent, School, Lawyer etcTable 4 ProductsProducts_ID = primary key,,,,Trading_ID = foreign keySupply frozen foods, transport services, sports goods, etc Table 5 Account Account_ID = primary key,,,,Customer_ID = foreign keyAccount Name, Credit Limit, Payment Terms, Open date, Account contact etc One big point of confusion is, can I have the Customer_ID from the principal Customers tablein every table as a foreign key or must the tables be chained together one after the other as such. Advice appreciatedThanks
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Apr 10, 2007
Hi,
I need a hand with designing a database.
I am collecting results from a survey which has the following questions:
Call ref? How did you place your support call? Were you satisfied with the amount of time you had to wait until getting acknowledgement of the support call placed? 1 = very satisfied and 10 = very unsatisfied. How happy were you with the customer service you received upon placing the support call? 1 = very unhappy and 10 = very happy.How satisfied were you with the amount of time you had to wait until you heard from an engineer? 1 = very satisfied and 10 = very unsatisfied. How satisfied were you with the time taken to get your problem/query resolved? 1 = very satisfied and 10 = very unsatisfied Did you feel the engineer had enough knowledge to deal with your call? 1 = very good and 10 = not very good Overall how satisfied were you with the support call placed? 1 = very satisfied and 10 = very unsatisfiedIs there anything we can do to improve the quality of the support and service you received?
I want to store this in a database. Obviously I want to use best practice for design, normalisation etc. The stumbling block I am coming accross is the fact that each question has a number and each question has a score from 1 to 10 and storing this in the database. Any help appreciated!
Thanks
Andrew
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Apr 26, 2007
I am creating database tables for company testimonials. Database columns: name, position, companyname, comment, service we provided.
My question is that for each company - may have a multitude of different services from us, and different people with different positions in the same company may make comments.
What is best practice for putting this db structure together?
Thanks
Andrew
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Oct 29, 2007
Can anyone tell me how can i design database architecture for the Table Category & Product...so that i can make N-level entity relation....I have database in SQL SERVER 2000.
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Jan 30, 2008
I guess I am confused about something and need some help. I am looking at a database schema for about 20 tables in a database. I noticed that the firstcolumn in each table Is some type of Id. For example StudentId,TestId etc.Where the Id is a unique numeric sequential value.
So I have some questions?1- Do these Id's act as what are called indexes for the table?(Unique indexes)2- If the answer to 1 is correct, then how do I create these unique indexes? Is it as simple as declaring the Id column as the primary key and that this value will be generated automatically upon insert? 3- Is it necessary to have an Id column for every table, or may I only do it for a few of them?4. In relation to Question2, what do I need to do, so that the Id column will automatically be created when someone inserts a value into the database table with an ID column.
For example here are two sample tables
StudentsInfo
StudentId<PK> Name Age 1 Mark 33 2 Jill 23 3 Mary 25
PersonalInfo
Name<FK> SocialSecurity Address MajorMark 324-444-3342 15 Elm ArtJill 888-888-8998 21 North ScienceMary 876-777-2344 18 Byle Music
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Apr 17, 2008
Hi,I am planning to create a technical forum for our college. could any one give me an idea of how to design the database for the forum. what table and columns i should have?
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Nov 3, 2004
I have got a design issue.I have got 4 tables,having relationships.Now,user will edit records and save them,but I want to save the values which were exixsting before they were edited and saved.Implying,if a record is edited 50 times,then the values of each edit needs to be saved.How best ,can I achieve this.
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Oct 20, 2005
Hi !!We are designing a system where we ask people for their interests and store in into the database and send customize email. Following are the questions:1) Should we use Identity column as Primary Key and CustomerID column? OR we should create Custom CustomerID and use it as Primary Key? (I have read few articles about Identity column as Primary or not Primary, but need little advice what to accept)2) We have a Tables called : Interest & Customer_InterestCustomer Table:CustomerID, Customer Name, Address, Email, Signup DateInterest Table:InterestID, InterestNameCustomer_Interest: (Need suggestion for How to design this)Should Table be design like:Option1: CustomerID, InterestIDOption2: CustomerID, Interest1, Interest2, Interest3, Interest4i.e.Lets Say: Customer table has CustomerA, CustomerB, CustomerCInterest table has Interest I1, I2, I3, I4Lets Say CustomerA Signedup for Interest I1, I2, I3 and CustomerB signed up I1, I4As per Option1:Customer_Interest Table witll haveCustomerA, I1CustomerA, I2CustomerA, I3CustomerB, I1CustomerB, I4ORAs per Option2Customer_Interest (Where Interest Column is bit column..... 1 = Signed up, 0 = Not Signed upCustomerA, 1, 1, 1, 0CustomerB, 1, 0, 0, 1Which way we should design? 3) If we select Option2, and if we are displaying data in ASP.NET Page, will there be any issue if we use 3 tier architecture?Thanks !!!
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Nov 10, 2005
I am designing an inventory database in which I need some help, I have the following entities:ItemsNotebookWireless CardADSL Modemetc...ModelsAcer centrino 1.6Acer centrino 1.733COM 4x125 hours Wi-fi access50 hours Wi-fi accessetc... PackagesPackage A:Acer centrino 1.63COM 4x125 hours Wi-fi accessPackage B:Acer centrino 1.733COM 4x150 hours Wi-fi accessI made a table for the items having the following fields: Item_ID, Item_Nameand another for the Models having: Model_ID, Model_Name, Item_Type(Foreign Key to Items table)up to this point is this correct?About the packages table, I don't know if it is correct to have a field for each model (one for notebook, other for modem, and other for wireless card) like this it would be like having 3 foreign keys to the same table but nothing distinguishes themI don't know how to relate the packages and the models table.Any recommendations for a proper design for those entities?
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Dec 20, 2005
I am creating a knowledge base. I want the user to be able to choose a category such as Hardware, Software, Etc. then I want them to be able to choose what type of software such as word, excel, ets.
It will then display in a gridview problems, solutions, submitted by, last updated, and review date.
The gridview will allow users to update solutions and I would also like the ability for technicians to be able to add new Problems/solutions.
What would be the best way to handle this?
Any tips are appreciated.
Rick
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May 2, 2000
I have requirement to create table of 100 columns. Should i create 100 columns in one table or i should create three coulmn table with column id, column desc, column value with 1 row in 100 column table = 100 row in 3 column table. Which will be faster & efficient in performance, io & size.
Thanks
Manoj
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Dec 13, 2000
The database will provide content management for an Intranet site.
On the site we have a number of articles which are categorised. Each categories can also have sub-categories.
The relationships would seem to be
Category---->Sub-Category----->Article
A category has one or mant sub-categories. A sub-category has one or many articles.
However some categories have articles but are no sub-categories.
Should I create a further relationship between Category and Article to cater for this instance or should their be a dummy category record in this instance?
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Sep 30, 2002
Hi everbody!!!
i first would like to congratulate this forum for the new member!!! ME ;)
Then i have this question, i´m going to design a database in SQL server and i would like to have some basic hint how to build it up.
It´s a calender for a ASP.Net site i´m building and for the moment it´s just 4 things to have in mind
-users
-dates
-todo´s
-birthdays
If something is unclaer then PLEASE ask me!!
Thanx in advance icaaq
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Dec 24, 2002
Hi all:
I am designing a sql server database to keep track of patient history and data about various diseases. Is there a book or any kind of resource that I can refer? Any help is appreciated.
Thanks,
ndba
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Feb 9, 2001
I had a consultant design a database for me and every table contains a GUID. Most tables already contain a field that is unique. Is this necessary? In my view, the queries are no more efficient and it just takes up more space.
Thanks
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Sep 30, 2004
trying to work on a new project, i need some ideas to setup this design model.
sql 2000 database and asp.
This is call center environment where agent bid on shift (schedules) base on most disireable to least, and it process base on seniority.
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Jan 14, 2005
Hi I was wondering if you could help me. I am currently trying to design a database. This database 4 tables, Main_Cat, Sub_Cat,SubSub_Cat and Prod_parent. How ever, not every sub_cat has a subsub_cat. And waas just wondering how I would link this.
Thanks
Ashley
I have attached an image of what I have so far, if any one could help it would be greatly appreciated
Thanks
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