数据库设计说明书
数据库设计主要是说明一些数据库的结构和设计,主要是给公司内部所有人员,公司内部部门,项目组,指定人员看的。 下面是我写的关于数据库设计的文档。 1引言...2 1.1编写目的...2 1.2背景...2 1.3定义...2 1.4参考资料...2 2外部设计...2 2.1标识符和状态..
数据库设计主要是说明一些数据库的结构和设计,主要是给公司内部所有人员,公司内部部门,项目组,指定人员看的。
下面是我写的关于数据库设计的文档。
1引言...2
1.1编写目的...2
1.2背景...2
1.3定义...2
1.4参考资料...2
2外部设计...2
2.1标识符和状态...2
2.2使用它的程序...3
2.3约定...3
2.4专门指导...3
2.5支持软件...3
3结构设计...3
3.1概念结构设计...3
3.2逻辑结构设计...3
3.3物理结构设计...4
4运用设计...4
4.1数据字典设计...4
4.2安全保密设计...4
数据库设计说明书(GB8567——88)
1引言
目前,在大多数学校里,公用的计算机机房的主要作用是安排学生的课堂学习,即安照教材和老师的安排进行学习,在课堂上没有学生自由发挥的时间。学生们的主观能动性和知识面受到很大的限制,往往是老师布置的会做,在一些实际的问题面前没有解决问题的思路而变的无计可施。计算机课程的学习是一种实践为主的学习,书本的知识必须借助实践来消化吸收,只有多上机多实践才能提高学习的效率。所以急需一套机房收费系统来高效率的管理机房里学生上机收费。该系统软件非常容易接受,它具有简单易学性,便于管理,安装简单,占用系统资源少等功能。
1.1编写目的
如今,社会已经到了一个科学技术高速发展的阶段,学校机房为了适应自身的发展要求。从具体的业务与项目的服务出发,需要更大程度的提高工作效率,减轻老师的工作强度,事实上需要一个综合的收费管理系统来对机房上机收费进行简单、便捷的管理。从而达到节约时间,提高效率,方便准确快捷的目的,同时也为自身的发展提供一个广阔的平台。在这种情况下,机房收费系统就成了一个客观需要,这份可行性报告是对机房收费系统的可行性研究分析及指出其存在的必要性。它的预期的读者是做需求分析的软件分析员、客户、维护工作人员等。
1.2背景
现代社会的校园网络环境,已经大大发生了变化,除了个人笔记本电脑,各种计算机、语音实验室机房也成为了使用频率颇高的场所,我们不能仅仅把它理解为提供上机的环境,而是应该完善此处的各种相关工作,如考勤,收费等,同时最大限度的降低机房的运营成本,提高使用率。通过建设“机房管理系统”,运用先进的技术手段和设备,满足以上应用需求。
机房管理系统是一个功能比较完善的数据管理软件,具有数据操作方便高效迅速等优点,具有很好的可移植性,可在WINDOWS系列等操作系统上使用。
说明:
A. 所建议开发的软件系统的名称:机房管理系统2.0
B. 本项目的任务提出者:米老师
开发者:邱慕夏
用户:廊坊师范学院信息技术提高班
实现该软件的计算中心或计算机网络:个人笔记本电脑
C. 该软件系统同其他系统或其他机构的基本的相互来往关系:可访问学生学籍系统的数据库
1.3定义
1.4参考资料
列出有关的参考资料,如:
A、《项目开发建议书》
B、学生管理系统
C、软件工程视频
D、SQL浙大视频
E、《需求分析说明书》
F、《概要设计说明书》
2外部设计
2.1标识符和状态
联系用途,详细说明用于唯一地标识该数据库的代码、名称或标识符,附加的描述性信息亦要给出。如果该数据库属于尚在实验中、尚在测试中或是暂时使用的,则要说明这一特点及其有效时间范围。
表名称 |
标识符 |
描述信息 |
使用状态 |
基本信息 |
BasicDaa_info |
|
使用 |
退卡信息表 |
CancelCard_info |
|
使用 |
日结账单表 |
CheckDay_info |
|
使用 |
周结账单表 |
CheckWeek_info |
|
使用 |
上机记录表 |
Line_info |
|
使用 |
正在上机表 |
Online_info |
|
使用 |
工作表 |
OnWork_info |
|
使用 |
充值表 |
ReCharge_info |
|
使用 |
学生信息表 |
Student_info |
|
使用 |
用户表 |
User_info |
|
使用 |
工作记录表 |
Worklog_info |
|
使用 |
2.2使用它的程序
列出将要使用或访问此数据库的所有应用程序,对于这些应用程序的每一个,给出它的名称和版本号。
时间 |
名称 |
版本号 |
2013/12之前 |
机房收费系统 |
1.0 |
2013/12之后 |
机房收费系统 |
2.0 |
2.3约定
陈述一个程序员或一个系统分析员为了能使用此数据库而需要了解的建立标号、标识的约定,例如用于标识数据库的不同版本的约定和用于标识库内各个文卷、、记录、数据项的命名约定等。
A、数据库对象命名约定:
(1) 表名均以“_info”结尾
(2) 视图均以“V_”开头
(3) 存储过程均已“p_”开头,
B、 相关表明、字段名、的英文简写约定
(1) 有英文单词组合而成,且没单词首字母加下横杆。
2.4专门指导
向准备从事此数据库的生成、从事此数据库的测试、维护人员提供专门的指导,例如将被送入数据库的数据的格式和标准、送入数据库的操作规程和步骤,用于产生、修改、更新或使用这些数据文卷的操作指导。如果这些指导的内容篇幅很长,列出可参阅的文件资料的名称和章条。
2.5支持软件
简单介绍同此数据库直接有关的支持软件,如数据库管理系统、存储定位程序和用于装入、生成、修改、更新数据库的程序等。说明这些软件的名称、版本号和主要功能特性,如所用数据模型的类型、允许 的数据容量等。列出这些支持软件的技术文件的标题、编号及来源。
软件名称 |
版本号 |
功能 |
操作系统 |
WindowXP window7 |
操作系统 |
机房收费系统 |
2.0 |
可以直接对数据库进行修改 |
SQL Server 2008 |
|
存储数据 |
3结构设计
3.1概念结构设计
说明本数据库将反映的现实世界中的实体、属性和它们之间的关系等的原始数据形式,包括各数据项、记录、系、文卷的标识符、定义、类型、度量单位和值域,建立本数据库的每一幅用户视图。
基本数据:
喎?http://www.2cto.com/kf/ware/vc/" target="_blank" class="keylink">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"0" cellspacing="0" align="left">
3.3物理结构设计
建立系统程序员视图,包括:
a. 数据在内存中的安排,包括对索引区、缓冲区的设计;
b. 所使用的外存设备及外存空间的组织,包括索引区、数据块的组织与划分;
c. 访问数据的方式方法。
数据表关系图

4运用设计
4.1数据字典设计
对数据库设计中涉及到的各种项目,如数据项、记录、系、文卷、模式、子模式等一般要建立起数据字典,以说明它们的标识符、同义名及有关信息。在本节中要说明对此数据字典设计的基本考虑。
(这里是具体些的每一个表中的字段、属性等)
4.2安全保密设计
说明在数据库的设计中,将如何通过区分不同的访问者、不同的访问类型和不同的数据对象,进行分别对待而获得的数据库安全保密的设计考虑。

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