（簡答題）簡述電子商務(wù)的主要類型。
（名詞解釋）數(shù)據(jù)耦合
?（名詞解釋）概念數(shù)據(jù)模型
?（名詞解釋）系統(tǒng)設(shè)計(jì)說明書
?（簡答題）簡述結(jié)構(gòu)化設(shè)計(jì)的基本思想。
簡述系統(tǒng)安全管理的措施。
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本題考查電子商務(wù)的主要類型。
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