A table is created by a
Triggers, constraints (primary, unique, check and references from the table being dropped), and indexes defined on the table are silently dropped. The existence of an open cursor that references a table being dropped causes the DROP TABLE statement to generate an error, and the table is not dropped.
The DROP TABLE statement will also generate an error if the table is used in a view, or if a trigger defined on another table references the table in its trigger action.
Dropping a table invalidates
statements that depend on the table. (Invalidating a statement causes it to
be recompiled upon the next execution. See