Oracle Database SQL 12c 1z0-071 Exam Practice Test 1

Question : 23 of 50

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ALTER TABLE orders MODIFY CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
ALTER TABLE orders ADD CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
ALTER TABLE orders MODIFY customer_id CONSTRAINT orders_cust_nn NOT NULL (customer_id);
ALTER TABLE orders ADD customer_id NUMBER(6)CONSTRAINT orders_cust_id_nn NOT NULL;

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