无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

單項選擇題

Which of the following is NOT true about XML columns?()

A.Data can be retrieved by SQL.
B.Data can be retrieved by XQuery.
C.XML columns must be altered to accommodate additional parent and child relationships.
D.Access to any portion of an XML document can be direct, without reading the whole document.

微信掃碼免費搜題