What are triggers? Why do we use them? Diff types of triggers? What are magic tables?
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Answer Posted / Avdesh Tripathi
{n "triggers": {n "definition": "Database objects that automatically execute a stored procedure in response to an event",n "purpose": "Triggers enable the automatic enforcement or implementation of business rules, security policies, auditing and logging, and data consistency checks",n "types": [n {"name": "Before trigger", "event": "occurs before an operation is executed"},n {"name": "After trigger", "event": "occurs after an operation is executed"},n {"name": "Instead of trigger", "event": "replaces the default action for a specified event"}n ],n "magic tables": "Special system tables that store information about triggers and other database objects in Sybase ASE"n }
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