29. 下列何者是嵌入式SQL (embedded SQL)中，以每次單一值組來處理 (tuple-at-a-time processing)傳回查詢結果的概念？
(A)資料指標(cursor)
(B)位址指標(address pointer)
(C)傳址呼叫(call-by-address)
(D)傳值呼叫(call-by-value)

在嵌入式 SQL (embedded S...