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What is a database trigger ? Name some usages of database trigger ?

ORACLE Interview Questions and Answers (Part 3)


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492. What is a database trigger ? Name some usages of database trigger ?

Database trigger is stored PL/SQL program unit associated with a specific database table. Usages are Audit data modifications, Log events transparently, Enforce complex business rules Derive column values automatically, Implement complex security authorizations. Maintain replicate tables.

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