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Aged Yak Warrior

551 Posts

Posted - 02/04/2010 :  16:02:33  Show Profile  Reply with Quote

When I drop 2 tables into the visual studio's linqdataclasses context window the tables primary keys (that are associated) get a line between them automatically, how do they get that, like in this picture..


Almighty SQL Goddess

38013 Posts

Posted - 02/04/2010 :  16:09:21  Show Profile  Visit tkizer's Homepage  Reply with Quote
It's called referential integrity. You link tables together via foreign keys.

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server

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"Let's begin with the premise that everything you've done up until this point is wrong."
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Aged Yak Warrior

551 Posts

Posted - 02/05/2010 :  06:51:49  Show Profile  Reply with Quote
Thanks for the info.

I tried to check how this can be set when designing tables, but the only thing I found was that I could do that by altering tables, isn't is possible to configure this using the sql server management studio?
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United Kingdom
22514 Posts

Posted - 02/05/2010 :  07:50:32  Show Profile  Reply with Quote
Right click table : "Design"

Chose menu option "Table designer : Relationships"

Select an existing relationship, or press [ADD] to create a new one

Next to "Tables and Column specification" press the [...] button and choose the column(s) from the current table and the Table, and Column(s) from the new corresponding table that you want to make a relationship with.

Edited by - Kristen on 02/05/2010 07:51:26
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Aged Yak Warrior

551 Posts

Posted - 02/05/2010 :  08:17:36  Show Profile  Reply with Quote
Ahh, thanks!
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