What are the different types of triggers in PL/SQL and explain each of them?

1 Answers
Answered by suresh

Types of Triggers in PL/SQL

  1. BEFORE Triggers: These triggers are fired before an event such as INSERT, UPDATE, or DELETE occurs on a table. They can be used to enforce business rules or perform validations before the actual operation takes place.
  2. AFTER Triggers: These triggers are fired after an event has occurred, such as INSERT, UPDATE, or DELETE. They are commonly used to log information, audit changes, or perform cleanup operations.
  3. INSTEAD OF Triggers: These triggers are used to replace the triggering action, such as an INSERT or UPDATE, with a different action. They are often used on views to enable DML operations on them, which are otherwise not directly updatable.

Each type of trigger serves a specific purpose and can be useful in different scenarios when developing database applications in PL/SQL.

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