A.數(shù)據(jù)結(jié)構(gòu),數(shù)據(jù)通信,關(guān)系操作 B.數(shù)據(jù)結(jié)構(gòu),數(shù)據(jù)操作,數(shù)據(jù)完整性約束 C.數(shù)據(jù)通信,數(shù)據(jù)操作,數(shù)據(jù)完整性約束 D.數(shù)據(jù)結(jié)構(gòu),數(shù)據(jù)通信,數(shù)據(jù)完整性約束

正確答案：D

試題解析：略