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 ...

It often seems that working around things is a full-time task in every area of information technology. When workarounds are conceived and deployed, people are not always in agreement. Beyond ...

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 ...

A new potential characteristic of a SAS data set known as integrity constraints has been added for SAS Version 7 or Version 8. Integrity constraints are a set of data validation rules that preserve ...

Marten is an open source .NET document database library that allows the storage, loading, updating and deleting of objects as documents in an underlying PostgreSQL database. Even though Marten stores ...

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 ...