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 ...

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 ...

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 look at ...

As I mentioned in another thread, I'm beginning on my first large-scale ETL project. I'll be replacing an existing system that works, fixing a few bugs along the way. I'd like to take the opportunity ...