By using cascading referential integrity constraints, you can define the actions that SQL Server 2005 takes when a user tries to delete or update a key to which existing foreign keys point. Skip ...

Referential constraints, which allow you to link the data values of the variables in one data file to specific variables in another data file. ... Example 2: Creating Integrity Constraints with the ...

Hi,I'm in the process of building a SQL clean-up script that will be removing lots of now redundant data from our Oracle DB.It seems that for tables which contain a FK pointing back to themselves ...

So, it is a good physical database design practice to implement referential integrity using database constraints. Ignoring the relationships does not eliminate the business requirement. Proper ...

When I am working with an Oracle database, I still find myself using SQL*Plus for many quick and dirty database queries. In particular, I often look up constraints in SQL*Plus. In this post, I ...

Referential integrity helps manage data by enforcing validation between related entities. This enforcement follows logical semantics behind the database design -- i.e., an employee can only work for ...