A.MODIFY VIEW B.RENAME VIEW C.CHANGE VIWE D.CREATE SQL VIEW
A.只能對(duì)自由表創(chuàng)建視圖 B.不能對(duì)自由表創(chuàng)建視圖 C.只能對(duì)數(shù)據(jù)庫表創(chuàng)建視圖 D.可以對(duì)各種數(shù)據(jù)庫表創(chuàng)建視圖
A.Close B.Clear all C.Clear D.Use