(餐饮行业分析)小型餐饮管理系统数据库设计报告.docx

(餐饮行业分析)小型餐饮管理系统数据库设计报告 第一章设计任务与要求 目的及意义： 此小型餐饮业管理系统的设计主要是为了方便管理，对于各个进出账目，支出和收入的管理便于系统化，在每月汇总计算中分析运营趋势和餐馆的发展方向进行一定的规划。通过各个月的盈利进行对比，分析那种方式更适合餐馆的有利运营和更好地服务顾客。实现对餐馆内部各种管理的电子化、自动化，提高各个模块之间的办公效率，为高质量餐馆服务提供保证。 任务： 1.能够实现对该系统进行管理的人员的权限限制； 2.使餐馆能够及时并灵活的对菜品品种其价位等进行管理； 3.为餐馆提供从客户点餐到结算等一系列操作的服务，使之能简单易行、方便、 清楚地进行管理 第二章系统功能分析 一功能需求：餐饮管理系统中主要包括对以下几种管理：账单管理，财务管理，订餐管理，菜品管理，系统管理。 （1）系统管理：系统管理包括用户名和密码，主要用于用户登陆界面登陆和查询。 （2）账单管理：账单管理包括账单号和餐台，每一个餐台对应一个一个账单号，通过餐台号的记录来对对应的餐台进行记账管理，即就是记录每一个餐台的消费金额。账单管理是财务管理的一个小分支，是服务于财务管理的。 （3）财务管理：包括账单号，时间和账目。账目用于记录账单号的消费金额及时间，以便用于结算和汇总。每日的结算要通过对每个餐台号的消费金额汇总来记录，然后由每日的结算汇总得出每月的结算。帐务系统功能的完整性。一旦该系统正式运行，餐厅每日营业帐和全部往来客户帐务的操作结算都将依靠计算机，该系统面对当前餐饮业各种复杂的结算要求应具有很强的应变能力。 （4）订餐管理：订餐管理仅包括单价。订餐管理是便于顾客订餐和账单管理时对各个菜品消费金额的记录，这样便于账单管理和财务汇总。 （5）菜品管理：菜品管理包括菜名，菜品类别和菜品品种。菜品管理便于顾客点菜和记录各个餐台的消费记账，菜品品种也便于餐馆的食材采购。 二. 数据需求：账单管理中账单号是主键，每一个餐台对应一个账单号。财务管理中账单号是主键，每一个账单号都有对应的时间和账目记录。订餐管理中单价就是主键。菜品管理中菜名是主键。系统管理中用户名是主键。 三. 性能需求：该餐饮系统操作简单方便可适应各类中小型餐馆。 第三章系统功能模块设计 一. 在该系统功能分析的基础上，考虑PowerBuilder程序编制的特点，得到如下功 能模块图。 图1 系统功能模块图 二. 数据库设计 1. 概念结构设计 2. 逻辑结构设计 1) 数据库及表结构的创建 设本系统使用的数据库名为小型餐饮业管理系统,根据已设计的关系模式及各模式的完整性要求，现在就可以在SQL Server 6.x数据库系统中实现这些逻辑结构。 下面是创建基本表的SQL语句： /* = */ /* Table: CAIPINGL */ /* = */ create table CAIPINGL ( CPGL_NAME char(20) not null, CPGL_DANJIA integer not null, CPGL_LEIBIE char(8) null , CPGL_PINGZHONG char(8) null , CPGL_DIANCAI integer null , constraint PK_CAIPINGL primary key (CPGL_NAME, CPGL_DANJIA) ) go /* = */ /* Table: XTGL */ /* = */ create table XTGL ( USERNAME char(20) not null, PASSWORD char(8) not null, constraint PK_XTGL primary key (USERNAME, PASSWORD) ) go /* = */ /* Table: ZHANGDAGL */ /* = */ create table ZHANGDAGL ( ZHANGDAN_NUMBER numeric not null, ZHANGDAN_CANTAI numeric null , CAI_ZHANGDAN_NUMBER numeric null , constraint PK_ZHANGDAGL primary key (ZHANGDAN_NUMBER) ) go /* = */ /* Index: RELATION_383_FK */ /* = */ create index RELATION_383_FK on ZHANGDAGL (CAI_ZHANGDAN_NUMBER) go /* = */ /* Table: CAIWUGL */ /* = */ create table CAIWUGL ( ZHANGDAN_NUMBER numeric not null, CAIWU_TIME timestamp null , CAIWU_AMOUNT char(10) null , constraint PK_CAIWUGL primary key (ZHANGDAN_NUMBER) ) go /* = */ /* Table: DINGCANGL */ /* = */ create table DINGCANGL ( ZHANGDAN_NUMBER numeric not null, DCGL_NAME char(20) not null, DCGL_DANJIA int not null, constraint PK_DINGCANGL primary key (ZHANGDAN_NUMBER, DCGL_NAME, DCGL_DANJIA) ) go /* = */ /* Index: RELATION_451_FK */ /* = */ create index RELATION_451_FK on DINGCANGL (ZHANGDAN_NUMBER) go 建立相关触发器，执行级联删除 * = */ /* Database name: MODEL_1 */ /* DBMS name: Microsoft SQL Server 6.x */ /* Created on: 2022-1-21 18:15 */ /* = */ /* Insert trigger "ti_caiwugl" for table "CAIWUGL" */ create trigger ti_caiwugl on CAIWUGL for insert as begin declare numrows int, numnull int, errno int, errmsg varchar(255) select numrows = rowcount if numrows = 0 return /* Parent "ZHANGDAGL" must exist when inserting a child in "CAIWUGL" */ if update(ZHANGDAN_NUMBER) begin if (select count(*) from ZHANGDAGL t1, inserted t2 where t1.ZHANGDAN_NUMBER = t2.ZHANGDAN_NUMBER) != numrows begin select errno = 30002, errmsg = 'Parent does not exist in "ZHANGDAGL". Cannot create child in "CAIWUG L".' goto error end end return /* Errors handling */ error: raiserror errno errmsg rollback transaction end go /* Update trigger "tu_caiwugl" for table "CAIWUGL" */ create trigger tu_caiwugl on CAIWUGL for update as begin declare numrows int, numnull int, errno int, errmsg varchar(255) select numrows = rowcount if numrows = 0 return /* Parent "ZHANGDAGL" must exist when updating a child in "CAIWUGL" */ if update(ZHANGDAN_NUMBER) begin if (select count(*) from ZHANGDAGL t1, inserted t2 where t1.ZHANGDAN_NUMBER = t2.ZHANGDAN_NUMBER) != numrows begin select errno = 30003, errmsg = '"ZHANGDAGL" does not exist. Cannot modify child in "CAIWUGL".' goto error end end /* Modify parent code of "CAIWUGL" for all children in "ZHANGDAGL" */ if update(ZHANGDAN_NUMBER) begin update ZHANGDAGL set CAI_ZHANGDAN_NUMBER = i1.ZHANGDAN_NUMBER from ZHANGDAGL t2, inserted i1, deleted d1 where t2.CAI_ZHANGDAN_NUMBER = d1.ZHANGDAN_NUMBER and (i1.ZHANGDAN_NUMBER != d1.ZHANGDAN_NUMBER) end return /* Errors handling */ error: raiserror errno errmsg rollback transaction end go /* Delete trigger "td_caiwugl" for table "CAIWUGL" */ create trigger td_caiwugl on CAIWUGL for delete as begin declare numrows int, errno int, errmsg varchar(255) select numrows = rowcount if numrows = 0 return /* Delete all children in "ZHANGDAGL" */ delete ZHANGDAGL from ZHANGDAGL t2, deleted t1 where t2.CAI_ZHANGDAN_NUMBER = t1.ZHANGDAN_NUMBER return /* Errors handling */ error: raiserror errno errmsg rollback transaction end go /* Insert trigger "ti_dingcangl" for table "DINGCANGL" */ create trigger ti_dingcangl on DINGCANGL for insert as begin declare numrows int, numnull int, errno int, errmsg varchar(255) select numrows = rowcount if numrows = 0 return /* Parent "ZHANGDAGL" must exist when inserting a child in "DINGCANGL" */ if update(ZHANGDAN_NUMBER) begin if (select count(*) from ZHANGDAGL t1, inserted t2 where t1.ZHANGDAN_NUMBER = t2.ZHANGDAN_NUMBER) != numrows begin select errno = 30002, errmsg = 'Parent does not exist in "ZHANGDAGL". Cannot create child in "DINGCA NGL".' goto error end end return /* Errors handling */ error: raiserror errno errmsg rollback transaction end go /* Update trigger "tu_dingcangl" for table "DINGCANGL" */ create trigger tu_dingcangl on DINGCANGL for update as begin declare numrows int, numnull int, errno int, errmsg varchar(255) select numrows = rowcount if numrows = 0 return /* Parent "ZHANGDAGL" must exist when updating a child in "DINGCANGL" */ if update(ZHANGDAN_NUMBER) begin if (select count(*) from ZHANGDAGL t1, inserted t2 where t1.ZHANGDAN_NUMBER = t2.ZHANGDAN_NUMBER) != numrows begin select errno = 30003, errmsg = '"ZHANGDAGL" does not exist. Cannot modify child in "DINGCANGL".' goto error end end return /* Errors handling */ error: raiserror errno errmsg rollback transaction end go /* Insert trigger "ti_zhangdagl" for table "ZHANGDAGL" */ create trigger ti_zhangdagl on ZHANGDAGL for insert as begin declare numrows int, numnull int, errno int, errmsg varchar(255) select numrows = rowcount if numrows = 0 return /* Parent "CAIWUGL" must exist when inserting a child in "ZHANGDAGL" */ if update(CAI_ZHANGDAN_NUMBER) begin select numnull = (select count(*) from inserted where CAI_ZHANGDAN_NUMBER is null) if numnull != numrows if (select count(*) from CAIWUGL t1, inserted t2 where t1.ZHANGDAN_NUMBER = t2.CAI_ZHANGDAN_NUMBER) != numrows - numnull begin select errno = 30002, errmsg = 'Parent does not exist in "CAIWUGL". Cannot create child in "ZHANGDAG L".' goto error end end return /* Errors handling */ error: raiserror errno errmsg rollback transaction end go /* Update trigger "tu_zhangdagl" for table "ZHANGDAGL" */ create trigger tu_zhangdagl on ZHANGDAGL for update as begin declare numrows int, numnull int, errno int, errmsg varchar(255) select numrows = rowcount if numrows = 0 return /* Parent "CAIWUGL" must exist when updating a child in "ZHANGDAGL" */ if update(CAI_ZHANGDAN_NUMBER) begin select numnull = (select count(*) from inserted where CAI_ZHANGDAN_NUMBER is null) if numnull != numrows if (select count(*) from CAIWUGL t1, inserted t2 where t1.ZHANGDAN_NUMBER = t2.CAI_ZHANGDAN_NUMBER) != numrows - numnull begin select errno = 30003, errmsg = '"CAIWUGL" does not exist. Cannot modify child in "ZHANGDAGL".' goto error end end /* Modify parent code of "ZHANGDAGL" for all children in "CAIWUGL" */ if update(ZHANGDAN_NUMBER) begin update CAIWUGL set ZHANGDAN_NUMBER = i1.ZHANGDAN_NUMBER from CAIWUGL t2, inserted i1, deleted d1 where t2.ZHANGDAN_NUMBER = d1.ZHANGDAN_NUMBER and (i1.ZHANGDAN_NUMBER != d1.ZHANGDAN_NUMBER) end /* Modify parent code of "ZHANGDAGL" for all children in "DINGCANGL" */ if update(ZHANGDAN_NUMBER) begin update DINGCANGL set ZHANGDAN_NUMBER = i1.ZHANGDAN_NUMBER from DINGCANGL t2, inserted i1, deleted d1 where t2.ZHANGDAN_NUMBER = d1.ZHANGDAN_NUMBER and (i1.ZHANGDAN_NUMBER != d1.ZHANGDAN_NUMBER) end return /* Errors handling */