Simple implementation of Oracle triggers

Source: Internet
Author: User
Trigger is a special stored procedure. Its execution is triggered by an event and runs automatically and implicitly [for example, when a table is operated (insert, delete, update) will activate it for execution]. Triggers are often used to enhance data integrity constraints and business rules. The trigger can contain DBA_TRIGGERS and USER_TRIGGERS data words.

Trigger is a special stored procedure. Its execution is triggered by an event and runs automatically and implicitly [for example, when a table is operated (insert, delete, update) will activate it for execution]. Triggers are often used to enhance data integrity constraints and business rules. The trigger can contain DBA_TRIGGERS and USER_TRIGGERS data words.

Trigger is a special stored procedure. Its execution is triggered by an event and runs automatically and implicitly [for example, when a table is operated (insert, delete, update) will activate it for execution]. Triggers are often used to enhance data integrity constraints and business rules. The trigger can be found in the DBA_TRIGGERS and USER_TRIGGERS data dictionary. The only difference between a trigger and a stored procedure is that a trigger is automatically triggered when a user executes a Transact-SQL statement instead of calling an EXECUTE statement.

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