Disabled mode
When a database object is disabled, the database server does not take it into consideration during the execution of an INSERT, DELETE, or UPDATE statement. A disabled constraint is not enforced, a disabled index is not updated, and a disabled trigger is not executed when the trigger event takes place. When you disable constraints and unique indexes, any data manipulation statement that violates the restriction of the constraint or unique index succeed, (that is, the target row is changed), and the database server does not return an error message.