June 2023
Intermediate to advanced
480 pages
12h 39m
English
Content preview from Oracle PL/SQL by Example, 6th Edition
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14
Mutating Tables and Compound Triggers
In the preceding chapter, you explored the concept of triggers. You learned about the use of triggers in the database, events that cause triggers to fire, and different types of triggers. In this chapter, you will continue exploring triggers. You will learn about mutating table issues and discover how triggers can be used to resolve these issues.
Lab 14.1: Mutating Tables
A table against which a DML statement is issued is called a mutating table. For a trigger, the mutating table is the one on which the trigger is defined. If a trigger tries to read or modify ...
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