Databases contain integrity constraints to prevent chaotic events from happening, such as shipping a product to a customer with no address. Each company has integrity constraints unique to its ...

The term "data integrity" can mean different things to different people, but the most difficult and pervasive problem facing organizations these days is the semantic integrity of the data. As ...

Referential integrity (RI)is a method for ensuring the “correctness” of data within a DBMS. People tend to oversimplify RI, stating that it is merely the identification of relationships between ...

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 ...

Want to improve the integrity of your data? Place constraints in the database, as well as in your application. NoSQL, the catchall phrase for non-relational databases, is all the rage among Web ...

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 ...