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​Structure of the ORDERITEMS Table

question 11

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​Structure of the ORDERITEMS table
​Structure of the ORDERITEMS table    -If a PRIMARY KEY constraint,named ORDERITEMS_PK,for the ORDER# and ITEM# columns of the ORDERITEMS table have been disabled,which of the following commands will enable the constraint?​ A)  ALTER TABLE orderitems ENABLE PRIMARY KEY CONSTRAINT; B)  ALTER TABLE orderitems ENABLE CONSTRAINT orderitems_pk; C)  ALTER TABLE orderitems MODIFY PRIMARY KEY CONSTRAINT; D)  ​ALTER TABLE orderitems MODIFY PRIMARY KEY CONSTRAINT ENABLE;
-If a PRIMARY KEY constraint,named ORDERITEMS_PK,for the ORDER# and ITEM# columns of the ORDERITEMS table have been disabled,which of the following commands will enable the constraint?​


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