In database management, business-critical integrity constraints enforce a company's rules. For example, a company can code a constraint that prevents a checkout counter from giving a customer a ...

Check constraints are supported in all of the major DBMS products, including DB2, Oracle, and SQL Server. But they are too-often ignored and not implemented in production databases. Properly defined, ...

Example 4: Removing Integrity Constraints The following sample program segments remove integrity constraints. In those that delete a primary key integrity constraint, note that the foreign key ...

Ensuring the integrity of the organization's databases is a key component of the DBA's job. A database is of little use if the data it contains is inaccurate or if it cannot be accessed due to ...

Database Integrity and Web Applications by Reuven Lerner. on February 14, 2013. Want to improve the integrity of your data? Place constraints in the database, ... For one, as the name implies, NoSQL ...

This example downloads the SAS data set STUDENTS in the library WORK on the remote host to the library WORK on the local host. Any non-referential integrity constraints defined for the input data set ...

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 ...

By using cascading referential integrity constraints, ... Tim Chapman is a SQL Server database administrator who works for a bank in Louisville, KY, and has more than 7 years of IT experience.