There are several reasons to use triggers. Triggers can automate a lot of stuff that you may have been doing by hand before. The main reason I use triggers is to maintain the integrity of one table that might rely on another table. For example, if TableA references TableB and a value from TableB gets deleted, you could have a trigger setup to handle the data in TableA. Perhaps the data in TableA should be reset to a generic value or maybe the data should just be deleted completely.

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J. Jeyaseelan
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