TBE (Trigger-By-Example) is proposed to assist users in writing trigger rules. TBE is a graphical trigger rule specification language and system to help users understand and specify active database triggers. Since TBE borrowed its basic idea from QBE, it retained many benefits of QBE while extending the features to support triggers. Hence, TBE is a useful tool for novice users to create simple trigger rules easily. Further, since TBE is designed to insulate the details of underlying trigger systems from users, it can be used as a universal trigger interface for rule formation.