Learn what is the syntax for creating a check constraint in SQL and how to use it to validate your data and enforce data integrity rules on your tables.

Learn about the different types of database constraints and how they can improve the quality and reliability of the data in your database.

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, ...

1. What is a “constraint” as it relates to data integrity? Database can be as reliable as the data in it, and database rules are implemented as Constraint to maintain data integrity. For example these ...

1. What is a “constraint” as it relates to data integrity? Database can be as reliable as the data in it, and database rules are implemented as Constraint to maintain data integrity. For example these ...