模拟银行实现ATM机取款系统
该系统使用( ( (SQLServer) ) )数据库
功能介绍：
- 开户（到银行填写开户申请单）
- 取钱
- 存钱
- 查询余额
- 转账
根据需求设计相对应的数据库概念模型
流程分步详解
@1 创建数据库Bank_db
--创建数据库
CREATE DATABASE Bank_db
ON PRIMARY
(
NAME = 'Bank_db_data',
FILENAME = 'D:\DATA\Bank_db_data.mdf',
SIZE = 5MB,
MAXSIZE = 50MB,
FILEGROWTH = 10%
)
LOG ON
(
NAME = 'Bank_db_log',
FILENAME = 'D:\DATA\Bank_db_log.ldf',
SIZE = 1MB,
FILEGROWTH = 1MB
)
@@ 2 根据E-R图建表
注意:身份证号不能重复,联系电话11位,所有涉及到的金额不能低于1元,默认密码6个8
--创建用户信息表
USE Bank_db
CREATE TABLE userInfo
(
userName varchar(32),
userCard varchar(32) UNIQUE,
userPhone varchar(11),
userAddress varchar(128)
)
--创建交易信息表
USE Bank_db
CREATE TABLE tradeInfo
(
tradeData varchar(16),
tradeMark varchar(32),
tradeType varchar(16),
tradeMoney float CHECK(tradeMoney>1)
)
--创建银行卡信息表
USE Bank_db
CREATE TABLE bankInfo
(
bankType varchar(32),
bankData varchar(32),
bankMoney float CHECK(bankMoney>1),
bankBalance float CHECK(bankBalance>1),
bankPassword varchar(16) DEFAULT '888888',
bankLose varchar(16)
)
@@@3 插入测试数据:三张表都要添加数据,并且张三账户的余额不能低于2000
客户信息表:
‘张三’,‘123456789012345’,‘01067898978’,‘北京海淀’
‘李四’,‘321245678912345678’,‘04784444333’
‘王五’,‘321245678912345679’,‘13566669999’,‘河南信阳’
‘李七’,‘321245678912345677’,‘13577778888’,‘河南洛阳’
--插入用户信息表
INSERT INTO userInfo VALUES('张三','123456789012345','01067898978','北京海淀')
INSERT INTO userInfo VALUES('李四','321245678912345678','04784444333','')
INSERT INTO userInfo VALUES('王五','321245678912345679','13566669999','河南信阳')
INSERT INTO userInfo VALUES('李七','321245678912345677','13577778888','河南洛阳')--插入交易信息表
INSERT INTO tradeInfo VALUES('2019/7/3/7','1010111112121134','转账',1000)
INSERT INTO tradeInfo VALUES('2019/7/4/9','1010 3576 1212 1134','存款',2000)
INSERT INTO tradeInfo VALUES('2019/7/5/8','987653321','存款',5000)
INSERT INTO tradeInfo VALUES('2019/7/7/3','987655321','取款',3000)--插入银行卡信息表
INSERT INTO bankInfo VALUES('转账','2019/7/3/7',1000,30000,'','否')
INSERT INTO bankInfo VALUES('存款','2019/7/4/9',2000,32000,'','否')
INSERT INTO bankInfo VALUES('存款','2019/7/5/8',5000,37000,'','否')
INSERT INTO bankInfo VALUES('取款','2019/7/7/3',3000,34000,'','否')@@@@ 4 常规业务模拟
1**. 修改密码**
张三（卡号为1010111112121134）修改银行卡密码为123456
2. 银行卡挂失
李四（卡号为1010 3576 1212 1134）因银行卡丢失，申请挂失
3. 查询余额3000~6000之间的定期卡号,显示该卡相关信息
4. 查询本月交易金额最高的卡号
5. 查询挂失帐户信息
--把张三的密码修改为123456
SELECT tradeType FROM tradeInfo WHERE tradeMark = '1010111112121134'
UPDATE bankInfo SET bankPassword = '123456' WHERE bankType IN(SELECT tradeType FROM tradeInfo WHERE tradeMark = '1010111112121134')
--查询修改后张三的密码
SELECT bankPassword FROM bankInfo WHERE bankType IN(SELECT tradeType FROM tradeInfo WHERE tradeMark = '1010111112121134')--李四的银行卡修改为挂失
SELECT tradeType FROM tradeInfo WHERE tradeMark = '1010 3576 1212 1134'
UPDATE bankInfo SET bankLose = '挂失' WHERE bankType IN(SELECT tradeType FROM tradeInfo WHERE tradeMark = '1010 3576 1212 1134')
--查询李四的挂失
SELECT bankLose FROM bankInfo WHERE bankType IN(SELECT tradeType FROM tradeInfo WHERE tradeMark = '1010 3576 1212 1134')--查询余额3000~6000之间的定期卡号,显示该卡相关信息
SELECT * FROM bankInfo WHERE bankBalance BETWEEN 3000 AND 6000--查询本月交易金额最高的卡号
SELECT TOP 1 tradeMark FROM tradeInfo ORDER BY tradeMoney DESC--查询挂失帐户信息
SELECT * FROM bankInfo WHERE bankLose = '挂失'
@@@@@ 5 索引和视图
**1. 创建视图：**为向客户显示信息友好，查询各表，要求字段全为中文字段名， 3个表对应的视图名称分别为： view_userInfo,view_cardInfo,view_transInfo
--索引和视图
--列的别名（中文字段）
SELECT userName AS '开户名',userCard AS '身份证号', userPhone AS '联系电话', userAddress AS '居住地址'FROM userInfo
SELECT tradeData AS '交易日期',tradeMark AS '卡号', tradeType AS '交易类型', tradeMoney AS '交易金额'FROM tradeInfo
SELECT bankType AS '存款类型',bankData AS '开户日期', bankMoney AS '开户金额', bankBalance AS '余额',bankPassword AS '密码', bankLose AS '是否挂失' FROM bankInfoCREATE VIEW view_userInfo ON FROM userInfo
CREATE VIEW view_cardInfo ON FROM tradeInfo
CREATE VIEW view_transInfo ON FROM bankInfo
@@@@@@6 T-SQL编程:存取款业务
张三的卡号（1010357612345678）取款900元，李四的卡号（1010357612121134）存款5000元，要求保存交易记录，以便客户查询和银行业务统计。
说明：当存钱或取钱（如300元）时候，会往交易信息表中添加一条交易记录，同时应更新银行卡信息表中的现有余额（如增加或减少300元）；
--存取款业务
DECLARE @zmoney float
DECLARE @lmoney floatSELECT @zmoney = tradeMoney FROM tradeInfo WHERE tradeMark = '1010111112121134'
UPDATE tradeInfo SET @zmoney = @zmoney - 900 WHERE tradeMark = '1010111112121134'
PRINT @zmoneySELECT @lmoney = tradeMoney FROM tradeInfo WHERE tradeMark = '1010 3576 1212 1134'
UPDATE tradeInfo SET @lmoney = @lmoney + 5000 WHERE tradeMark = '1010 3576 1212 1134'
PRINT @lmoney所有的步骤都已经展示给大家了@@@
如果有想看整个完整体系的话请看下面展示：
整体流程展示
--创建数据库
CREATE DATABASE Bank_db
ON PRIMARY
(
NAME = 'Bank_db_data',
FILENAME = 'D:\DATA\Bank_db_data.mdf',
SIZE = 5MB,
MAXSIZE = 50MB,
FILEGROWTH = 10%
)
LOG ON
(
NAME = 'Bank_db_log',
FILENAME = 'D:\DATA\Bank_db_log.ldf',
SIZE = 1MB,
FILEGROWTH = 1MB
)
--创建用户信息表
USE Bank_db
CREATE TABLE userInfo
(
userName varchar(32),
userCard varchar(32) UNIQUE,
userPhone varchar(11),
userAddress varchar(128)
)
--创建交易信息表
USE Bank_db
CREATE TABLE tradeInfo
(
tradeData varchar(16),
tradeMark varchar(32),
tradeType varchar(16),
tradeMoney float CHECK(tradeMoney>1)
)
--创建银行卡信息表
USE Bank_db
CREATE TABLE bankInfo
(
bankType varchar(32),
bankData varchar(32),
bankMoney float CHECK(bankMoney>1),
bankBalance float CHECK(bankBalance>1),
bankPassword varchar(16) DEFAULT '888888',
bankLose varchar(16)
)
--插入用户信息表
INSERT INTO userInfo VALUES('张三','123456789012345','01067898978','北京海淀')
INSERT INTO userInfo VALUES('李四','321245678912345678','04784444333','')
INSERT INTO userInfo VALUES('王五','321245678912345679','13566669999','河南信阳')
INSERT INTO userInfo VALUES('李七','321245678912345677','13577778888','河南洛阳')--插入交易信息表
INSERT INTO tradeInfo VALUES('2019/7/3/7','1010111112121134','转账',1000)
INSERT INTO tradeInfo VALUES('2019/7/4/9','1010 3576 1212 1134','存款',2000)
INSERT INTO tradeInfo VALUES('2019/7/5/8','987653321','存款',5000)
INSERT INTO tradeInfo VALUES('2019/7/7/3','987655321','取款',3000)--插入银行卡信息表
INSERT INTO bankInfo VALUES('转账','2019/7/3/7',1000,30000,'','否')
INSERT INTO bankInfo VALUES('存款','2019/7/4/9',2000,32000,'','否')
INSERT INTO bankInfo VALUES('存款','2019/7/5/8',5000,37000,'','否')
INSERT INTO bankInfo VALUES('取款','2019/7/7/3',3000,34000,'','否')--把张三的密码修改为123456
SELECT tradeType FROM tradeInfo WHERE tradeMark = '1010111112121134'
UPDATE bankInfo SET bankPassword = '123456' WHERE bankType IN(SELECT tradeType FROM tradeInfo WHERE tradeMark = '1010111112121134')
--查询修改后张三的密码
SELECT bankPassword FROM bankInfo WHERE bankType IN(SELECT tradeType FROM tradeInfo WHERE tradeMark = '1010111112121134')--李四的银行卡修改为挂失
SELECT tradeType FROM tradeInfo WHERE tradeMark = '1010 3576 1212 1134'
UPDATE bankInfo SET bankLose = '挂失' WHERE bankType IN(SELECT tradeType FROM tradeInfo WHERE tradeMark = '1010 3576 1212 1134')
--查询李四的挂失
SELECT bankLose FROM bankInfo WHERE bankType IN(SELECT tradeType FROM tradeInfo WHERE tradeMark = '1010 3576 1212 1134')--查询余额3000~6000之间的定期卡号,显示该卡相关信息
SELECT * FROM bankInfo WHERE bankBalance BETWEEN 3000 AND 6000--查询本月交易金额最高的卡号
SELECT TOP 1 tradeMark FROM tradeInfo ORDER BY tradeMoney DESC--查询挂失帐户信息
SELECT * FROM bankInfo WHERE bankLose = '挂失'--索引和视图
--列的别名（中文字段）
SELECT userName AS '开户名',userCard AS '身份证号', userPhone AS '联系电话', userAddress AS '居住地址'FROM userInfo
SELECT tradeData AS '交易日期',tradeMark AS '卡号', tradeType AS '交易类型', tradeMoney AS '交易金额'FROM tradeInfo
SELECT bankType AS '存款类型',bankData AS '开户日期', bankMoney AS '开户金额', bankBalance AS '余额',bankPassword AS '密码', bankLose AS '是否挂失' FROM bankInfoCREATE VIEW view_userInfo ON FROM userInfo
CREATE VIEW view_cardInfo ON FROM tradeInfo
CREATE VIEW view_transInfo ON FROM bankInfo--存取款业务
DECLARE @zmoney float
DECLARE @lmoney floatSELECT @zmoney = tradeMoney FROM tradeInfo WHERE tradeMark = '1010111112121134'
UPDATE tradeInfo SET @zmoney = @zmoney - 900 WHERE tradeMark = '1010111112121134'
PRINT @zmoneySELECT @lmoney = tradeMoney FROM tradeInfo WHERE tradeMark = '1010 3576 1212 1134'
UPDATE tradeInfo SET @lmoney = @lmoney + 5000 WHERE tradeMark = '1010 3576 1212 1134'
PRINT @lmoneyATM取款机系统已经做好了！！！
