接着，本文介绍了该系统的需求分析及数据库的设计，包括系统功能分析，功能模块的划分及数据库设计的原则与具体设计实现；

There're several parts such as introducing the function analysis of this system, the partition of function modules, the design principles and realization of the database.

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用uml详细描述了嵌入式MP 3播放器的开发过程，包括功能分析、硬件设计、软件设计、软件实现、系统编译、移植等方面。

UML is used in detail to describe the embedded MP3 player performance history, including functional analysis, hardware design, software design, software realization, system translation, transplant.

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