Ejemplos de triggers en SQL serverDescripción completa
Ejercicios de practicas y examenes de la asignatura de bases de datos de triggers, estructurados y prodados a la perfeccionDescripción completa
TriggersDescripción completa
Descripción completa
Descrição completa
Descripción: uso de triggers en my sql
--STATEMENT LEVEL TRIGGERS create or replace trigger trg1 before insert on suku begin if to_char(sysdate,'DY')in('WED','THUR') then raise_application_error(-20001,'cannot insert data'); end if; end; create or replace trigger trg1 before insert on suku begin if sysdate=last_day(sysdate)then raise_application_error(-20002,'cannot insert data on the last day of the month' ); end if; end; -- WITH TRIGGER EVENTS create or replace trigger trg1 before insert or update or delete on suku begin if inserting then raise_application_error(-20003,'cannot insert'); elsif updating then raise_application_error(-20004,'cannot update'); elsif deleting then raise_application_error(-20005,'cannot delete'); end if; end; --ROW LEVEL TRIGGERS create or replace trigger trg1 before insert on salai for each row begin if :new.sal<5000 then raise_application_error (-20001,'salary should be more than 5000'); end if; end;
