ALTER TABLE d_events ADD CONSTRAINT d_events_client_num_fk FOREIGN KEY (clien...
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ALTER TABLE d_eventsADD CONSTRAINT d_events_client_num_fk FOREIGN KEY (client_number) REFERENCES d_clients(client_number) ON DELETE CASCADE
Ha törlünk egy client_number-t a d_clients táblából, akkor a d_events táblából ezt a client_number-t tartalmazó rekordok törlésre kerülnek.Want instant access to all verified answers on moodle.uni-eszterhazy.hu?
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