Cascading referential integrity constraints are foreign key constraints that tell SQL Server to perform certain actions when a primary key field in a primary key-foreign key relationship is updated or ...

There are two categories of integrity constraints: General constraints, which allow you to restrict the data values that are accepted for the variables in a single data file, such as requiring that ...

I have a foreign key constraint that I created to reference the primary key of another table:<BR><BR><pre class="ip-ubbcode-code-pre">constraint geneassay_fk foreign ...

There are so many problems with foreign key constraints that we don't know where to start: Foreign key constraints make life very complicated, because the foreign key definitions must be stored in a ...

In part 2 of a series, On VB columnist Joe Kunk provides a Visual Basic program to generate a SQL script that clears all the data from a SQL Server database. In part one of this article, I described a ...

I'm working on a web app, and it part of it, there is a very simple database-driven file/document manager. As a file manager, there is the possibility of sub-folders. So in the DB, I have the ...