How many types of database triggers can be specified on a table ? What are they ?

How many types of database triggers can be specified on a table ? What are they ?
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1 Answer

Answer :

Insert Update Delete
Before Row o.k. o.k. o.k.
After Row o.k. o.k. o.k.
Before Statement o.k. o.k. o.k.
After Statement o.k. o.k. o.k.
If FOR EACH ROW clause is specified, then the trigger for each Row
affected by the statement.
If WHEN clause is specified, the trigger fires according to the returned
Boolean value.
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