使用PowerDesigner的Dam Architect可以对数据库生成物理数据模型(PDM)，这种功能通常称为______。
参考答案：逆向工程
解析：PowerDesigner Data Architect用于两层即概念层和物理层数据库设计和数据库构造。Data Architect提供概念数据模型设计，自动的物理数据模型生成，针对多种数据管理系统的数据库生成，开发工具的支持和高质量的文档特性。使用其逆向工程能力，设汁人员可以得到一个数据库结构的“蓝图”，可用于文档和维护数据或移植到一个不同的DBMS中。
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| One day Mozart saw an old man l the violin on a street corner. He 2 that the old man was playing 3 0f his compositions (乐曲). The old man played 4 some time, but the cap 5 him was still empty-nobody put any money 6 it. Mozart asked the old man, "Do you often play music composed by Mozart?" The old man answered, "Yes, because everyone has heard of Mozart and likes his music. "." Do you make a living by playing the violin?" The old man said he did. Mozart 7 the violin from the old man and began to play. He played so 8 that, all the passers-by(过路人) stopped _ 9 . the wonderful music. The old man was 10 that. the man could play so well. He asked Mozart, "Who are you, sir?" "A poor musician like you. " Mozart gave the violin to the old man and went on his way. | |||
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