A pure relational database, as designed by Codd ... and tables are related through foreign keys. SQL is used to declare the data to be returned, and a SQL query processor and query optimizer ...

Amazon Web Services has introduced Aurora DSQL, a serverless distributed SQL database engineered to deliver high availability ...

Some database designers try to avoid such semantic issues by defining OrderID as non-nullable so that it must have a value, even when not part of the primary key. These designers then try to propose ...

By using cascading referential integrity constraints, you can define the actions that SQL Server 2005 takes when a user tries to delete or update a key to which existing foreign keys point.

Retaining an infinitude of Foreign Keys may cause future performance bottlenecks as transactional volume will get a performance hit by maintaining all those foreign keys and the indexes behind them.

According to the report, the FBI failed to present a foreign intelligence purpose to use the database and instead used it to collect information on U.S. citizens, potentially shooting itself in ...

HONG KONG -- Foreign universities and research institutions say their access to China's largest academic database is about to be cut, deepening concerns that researching the country will become ...