A.變動(dòng)數(shù)據(jù)項(xiàng) B.固定數(shù)據(jù)項(xiàng) C.字符數(shù)據(jù)項(xiàng) D.數(shù)值數(shù)據(jù)頂
A.單個(gè)記錄錄入 B.單項(xiàng)數(shù)據(jù)錄入 C.按條件成批置入數(shù)據(jù) D.從外部直接導(dǎo)入數(shù)據(jù)