交银软件中心(信用卡预审系统项目)概要设计[编写:李嘉宁][评审:代杰][批准:]项目名称:日期:2015.1.9第2页共45页编号:时间:2021年x月x日书山有路勤为径,学海无涯苦作舟页码:第2页共45页文档版本版本号修改日期编写评审批准修改内容V1.02014-12-26李嘉宁代杰车梦炜建立第3页共45页第2页共45页编号:时间:2021年x月x日书山有路勤为径,学海无涯苦作舟页码:第3页共45页目录1.引言....................................................................................51.1目的..................................................................................51.2背景..................................................................................51.3参考资料..............................................................................51.4定义..................................................................................52.系统概述................................................................................52.1实现目标..............................................................................52.2条件与限制............................................................................52.3运行环境..............................................................................62.4开发环境..............................................................................62.5需求概述..............................................................................63.总体设计................................................................................63.1设计思想..............................................................................63.2设计规范..............................................................................63.3系统设计描述..........................................................................63.4系统功能描述..........................................................................73.5数据处理流程..........................................................................73.6系统性能设计..........................................................................74.接口设计................................................................................74.1外部接口..............................................................................74.2内部接口..............................................................................74.3用户接口..............................................................................75.模块结构设计............................................................................75.1联机功能..............................................................................75.2批量功能..............................................................................86.数据结构设计............................................................................86.1ER图..................................................................................86.2数据结构说明..........................................................................96.3常数说明..............................................................................97.安全设计................................................................................98.网络体系结构设计........................................................................98.1网络设计原则..........................................................................98.2网络拓扑结构.............................................................................