1.1前景概述
1.2主要特性
1.3假设与依赖
2 项目范围
2.1第一版范围
2.2后续版本范围
2.3限制与排除
1 项目前景
1.1 前景概述 ( 用一个简洁的声明概括系统的长期目标和意图。)
对那些希望通过公司自助餐厅或其他本地饭店在线订餐的员工来说，“自助餐厅订餐系统”是一个基于Internet的应用程序，他可以接受个人订餐或团体订餐，结算用餐费用，并触发将预订餐送到某公司内指定位置的事件。与当前的电话订餐和人工订餐不同，使用“自助餐厅订餐系统”的雇员并不需要到食堂内去用餐，这既可以节约他们的时间，又可以扩大他们对食物的选择范围。
1.2 主要特性 ( 为新产品的每一项主要特性或用户功能进行固定的，唯一的命名或编号，突出其超越原有产品或竞争产品的特性。 )
FE-1：根据自助餐厅提供的菜单来订餐。
FE-2：根据其他本地饭店的送货菜单来订餐。
FE-3：请求送餐。
FE-4：创建浏览，修改，删除用餐预定。
FE-5:通过公司的内联网访问系统，或者授权员工通过外部Internet访问系统。
1.3 假设与依赖 ( 记录构思项目和编写前景与范围文档过程中涉众所提出的每一项假设。)
AS-1：自助餐厅内有可以访问公司内网的计算机和打印机。
AS-2：自助餐厅有送货人员和送货车辆，最多比请求的送货时间晚15分钟。
DE-1：如果某饭店有自己的联机订餐系统，那么“自助餐厅订餐系统”必须能与这一系统进行双向通信。
2 项目范围
2.1 第一版范围 ( 概述计划在产品的第一个版本中实现的主要特性。 )
2.2 后续版本范围 ( 如果采取阶段性的开发方式，需要决定推迟实现哪些特性，并为后续的版本作出时间安排。)
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" alt="" /> 3.3 限制与排除 ( 管理范围蔓延的方法之一是，定义项目包含的需求与不包含的需求之间的界线。)
LI-1：自助餐厅的有些食物不适宜送货，因此“自助餐厅订餐系统”的顾客使用的送货菜单是食堂整个菜单的一个子集。
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