正确答案:

题目：阅读以下说明，回答问题1～4，将解答填入对应的解答栏内。

解析：该关系模式不满足2NF的要求

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学习资料的答案和解析：

[单选题]Due to a constantly(66) environment, a poor understanding of the user's needs and preferences, as well as a(67) of willingness to modify.(68) organizational structures and decision models, the full economic potential of Web Information Systems (WIS) has not been realized by now. The data object types of the(69) meta. model, the Extended World Wide Web Design Technique (eW3DT), provide hypertext designers(70) a conceptual, user-centric framework and graphical notation for the construction of both,(71) and customized models, during the software development(72) of commercial WIS. A reference model as a normative concept represents an abstraction of a(73) company, its functional units, or its Web Information System and is intended to streamline the design and implementation of complex applications at(74) costs. As precondition for pursuing a partial globalization strategy,eW3DT(75) between technical and content-specific responsibilities for designing, implementing, and maintaining WIS.

changing

[单选题]

B． 文字处理 C． 实时控制 D． 科学计算

数据处理B． 文字处理

解析：解析：Jackson方法是一种典型的面向数据结构的设计方法，以数据结构作为设计的基础，它根据输入输出数据结构导出程序的结构，适用于规模不大的数据处理系统。