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They recommend that you build APIs to interact with your tables, and populate your primary key columns that way.
Imagine you maintain a database for a business that sends a £5 discount code to every customer who makes a purchase.
In particular, there cannot be multiple triggers for a given table that have the same trigger event and action time.
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If an exception is raised in a TRANSACTION COMMIT trigger, the changes made by the trigger so far are rolled back and the client application is notified, but the transaction remains active as if COMMIT had never been requested; the client application can continue to make changes and re-request COMMIT.1) Row level trigger - An event is triggered for each row upated, inserted or deleted.2) Statement level trigger - An event is triggered for each sql statement executed.