Triggers and scheduled Events


  • What is a trigger? 
  • OLD and NEW values in UPDATE triggers 
  • Scheduled events

What is a Trigger? 

  • A set of SQL statements that are automatically executed (“triggered”) when a specific event occurs 
  • Used for automating database operations 
    • Logging 
    • Creating snapshots 
    • Computation of interesting values 
    • Changing data in one table in response to a change in another

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