在线订餐系统的ER图与逻辑图VIP免费

在线订餐系统作业题目：网上订餐数据库系统设计作业时间：2012年11月专业班级：XXXXXXXXXXXXXXXXX姓名：学号：授课教师：目录第一章需求分析............................................................................................31.1订餐现状分析............................................................................................................................31.2顾客需求分析............................................................................................................................31.3管理员需求分析........................................................................................................................31.4性能需求分析............................................................................................................................31.5可行性分析.................................................................................................................................41.6总体设计原则............................................................................................................................4第二章数据库概念结构设计...........................................................................52.1系统E-R图............................................................................................................52.2数据流图................................................................................................................62.3数据字典................................................................................................................62..3.1数据项................................................................................................................................62.3.2数据结构.............................................................................................................................72.3.3处理过程.............................................................................................................................7第三章数据库逻辑结构设计.........................................................................103.1数据库逻辑结构初步构思.....................................................................................................103.2具体逻辑结构设计..................................................................................................................11第四章数据库的物理结构设计.....................................................................124.1表间关系设计......................................................................................................124.2完整性设计..........................................................................................................12第五章数据库系统的实施............................................................................145.1数据库的建立......................................................................................................145.2数据输入...............................................................................................................14第六章数据库运行和维护............................................................................166.1定义并设置备份策略..........................................................................................166.2启用数据库维护计划任务..................................................................................16第七章报告总...