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Assertions and Triggers

Assertions and Triggers. Rose-Hulman Institute of Technology Curt Clifton. Assertions. Like constraints: Recall: state IN {'IA', 'MN', 'WI', 'MI', 'IL'} But can reference all tables Defined by: CREATE ASSERTION <name> CHECK ( <condition> );. Example: Assertion.

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Triggers

Triggers. BIT 275. A Quick Reference and Summary. Triggers. SQL code permits you to access only one table for an INSERT, UPDATE, or DELETE statement. The trigger was invented to change related tables at the same time.

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299 views • 26 slides

Module 11: Implementing Triggers

Module 11: Implementing Triggers. Overview. Introduction Defining Create, drop, alter triggers How Triggers Work Examples Performance Considerations Analyze performance issues related to triggers. Introduction to Triggers. What Is a Trigger? Uses Considerations for Using Triggers.

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Assertions and Triggers

Triggers

Module 11: Implementing Triggers