A.DELETED B.DELETE C.DROP D.UPDATE
A.插入,更新B.查看,檢索C.查看,存放D.檢索,插入
A.可變精度浮點(diǎn)值 B.整數(shù)值 C.雙精度浮點(diǎn)值 D.單精度浮點(diǎn)值