职员关系模式为E(Eno，Ename，Dept，Eage，Eaddr)，其中Eno表示职员号，Ename表示职员名，Dept表示职员所在部门，Eage表示年龄，Eaddr表示职员的家庭住址。建立“开发部”职员的视图DS_E(DS表示开发部)如下，要求进行修改、插入操作时保证该视图只有开发部的职员。

 CREATE VIEW DS_E

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XP is (71) of interesting twists that encourage one to think--for example, how about "Test and then code"? I've worked with software companies and a few IT organizations in (72) programmer performance was measured on lines of code delivered and testing was measured on defects found-- (73) side was motivated to reduce the number of defects prior to testing. XP uses two types of testing: unit and functional. (74) , the practice for unit testing involves developing the test for the feature prior to writing the code and further states that the tests should be automated. Once the code is written, it is immediately (75) to the test suite bringing instant feedback.

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MPEG-4是(53)，MPEG-4主要由音频编码、视频编码、数据平面、(54)、缓冲区管理和实时识别等部分构成，其中数据平面包括(55)两部分。

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