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 ...

Abstract: Database integrity is an important research content of database security, triggers can enforce the more complex referential integrity, and this paper studies the approach of using DML ...

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 ...

The SQL Data Quality Audit Framework is a comprehensive, SQL-based solution for detecting and quantifying data quality issues within relational databases. Designed with defensive data engineering ...

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 ...

ON DELETE CASCADE--or ON DELETE SET NULL or ON DELETE SET DEFAULT ON UPDATE CASCADE--or ON UPDATE SET NULL or ON UPDATE SET DEFAULT -- ON DELETE CASCADE If you delete a department from the Departments ...

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 ...