12.哪個陳述式會建立複合索引
鍵？
(A)CREATETABLE Order
(OrderID INTEGER,
Orderltem lDINTEGER,
PRIMARYKEY(OrderID,OrderltemID))
(B)CREATETABLE Order
(OrderIDINTEGERPRIMARYKEY,
OrderltemIDINTEGERPRIMARYKEY)
(C)CREATETABLE Order
(PrderIDINTEGER,
OrderltemIDINTEGER,
PRIMARYKEY)
(D)CREATETABLE Order
(OrderIDINTEGER,
OrderltemIDINTEGER,
PRIMARYKEYOrderID,
PRIMARYKEYOrderltemID)
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