A.數(shù)據(jù)庫 B.數(shù)據(jù)庫管理系統(tǒng) C.數(shù)據(jù)庫應(yīng)用系統(tǒng) D.操作系統(tǒng)
A.①② B.①③ C.②③ D.②④
A.delete * from 天氣預(yù)報 where’福州’ B.Update 天氣預(yù)報 where 城市=’福州’ C.delete 天氣預(yù)報 where 城市=’福州’ D.select from 天氣預(yù)報 where 城市=’福州’