Antonio TI

CREATE TABLE TAB_A ( ID_A BIGINT NOT NULL IDENTITY(1,1) PRIMARY KEY, DT_A SMALLDATETIME NOT NULL, MATR_OPER BIGINT NOT NULL, ID_FK BIGINT NOT NULL, NUM_ITEM INT NOT NULL, FOREIGN KEY (ID_FK, NUM_ITEM) REFERENCES TAB_B (ID_B, NUM_ITEM), FOREIGN KEY (ID_FK, NUM_ITEM) REFERENCES TAB_C (ID_C, NUM_ITEM) )