Specifying a combination of different event classes

If you define your trigger specification using a combination of event classes (Insert into , Delete from or Update of), there is an implicit OR between the different event classes.

For example, if you defined events in all three event classes, the implied condition to be met for the trigger specification would be:

Insert into TableA
OR
Delete from TableB
OR
Update of TableC

When all events have occurred within only one of the specified event classes, the condition(s) has/have been met for the trigger specification and the map is run.