Inserting updating deleting trigger events Naked women cameroon


25-Aug-2017 15:30

If any of these database objects is dropped, the trigger is invalidated.If the trigger cannot be successfully recompiled upon the next execution, the invocation throws an exception and the statement that caused it to fire will be rolled back.Along with constraints, triggers can help enforce data integrity rules with actions such as cascading deletes or updates.Triggers can also perform a variety of functions such as issuing alerts, updating other tables, sending e-mail, and other useful actions.An update that sets a column value to the value that it originally contained (for example, UPDATE T SET C = C) causes a row trigger to fire, even though the value of the column is the same as it was prior to the triggering event.

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The trigger is called once for every row the operation modifies. When the trigger is associated with the entire database, the event can either be CREATE TABLE, DROP TABLE, CREATE INDEX and DROP INDEX.You can define any number of triggers for a single table, including multiple triggers on the same table for the same event.



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