A.基本數(shù)據(jù)項(xiàng)描述,數(shù)據(jù)結(jié)構(gòu)定義,數(shù)據(jù)流的說(shuō)明,數(shù)據(jù)處理描述,外部實(shí)體描述
B.基本數(shù)據(jù)項(xiàng)描述,數(shù)據(jù)結(jié)構(gòu)定義,數(shù)據(jù)流的說(shuō)明,數(shù)據(jù)處理描述,數(shù)據(jù)存儲(chǔ)模式,外部實(shí)體描述
C.數(shù)據(jù)結(jié)構(gòu)定義,數(shù)據(jù)流的說(shuō)明,數(shù)據(jù)處理描述,數(shù)據(jù)存儲(chǔ)模式,外部實(shí)體描述
D.基本數(shù)據(jù)項(xiàng)描述,數(shù)據(jù)流的說(shuō)明,數(shù)據(jù)處理描述,數(shù)據(jù)存儲(chǔ)模式,外部實(shí)體描述