12

System Privileges Related To Table Triggers
create trigger
create any trigger
administer database trigger
alter any trigger
drop any trigger

Table Trigger Firing Options
-- before constraints are applied
BEFORE INSERT
BEFORE UPDATE
BEFORE DELETE

-- after constraints are applied
AFTER INSERT
AFTER UPDATE
AFTER DELETE

The oracle table can have the 12 Trigger associated with it.

-- before constraints are applied

1) BEFORE INSERT STATEMENT LEVEL
2) BEFORE INSERT ROW LEVEL
3) BEFORE UPDATE STATEMENT LEVEL
4) BEFORE UPDATE ROW LEVEL
5) BEFORE DELETE STATEMENT LEVEL
6) BEFORE DELETE ROW LEVEL


7)  AFTER INSERT STATEMENT LEVEL
8)  AFTER INSERT ROW LEVEL
9)  AFTER UPDATE STATEMENT LEVEL 
10) AFTER UPDATE ROW LEVEL
11) AFTER DELETE STATEMENT LEVEL
12) AFTER DELETE ROW LEVEL

depend on the  structure of tables