【数据库】【期中项目】图书销售管理系统——逻辑结构、表设计

简单记录一下，后来有更改但是也没有更新了，所以可能有很多小错误…
(1) 管理员tb_Admin

属性	说明	数据类型	约束
AdminID	工号	int	主键，自增字段
AdminName	用户名	varchar(20)	not null，unique
AdminPwd	密码	varchar(64)	not null
AdminTruename	真实姓名	varchar(20)	not null
AdminSex	性别	varchar(2)	not null,取男/女
AdminAge	年龄	int	not null,大于0且不超过120
AdminFlag	标签	int	not null,取0/1，0为普通管理员，1为超级管理员

create table tb_Admin(
AdminID int  auto_increment,
AdminName varchar(20) not null,
AdminPwd  varchar(20) not null,
AdminTruename varchar(20) not null,
AdminSex varchar(2) not null,
AdminAge int not null,
primary key(AdminID),
check(AdminSex in ('男','女')),
check(AdminAge > 0 and AdminAge < 120))

(2)书籍信息tb_Book

属性	说明	数据类型	约束
BookID	图书编号	int	主键，自增字段
Bookisbn	图书ISBN	varchar(20)	not null，unique
BookName	图书名称	varchar(20)	not null
BookPress	出版社	varchar(20)	not null
BookPubDate	出版日期	varchar(20)	not null
BookAuthor	作者	varchar(10)	not null
BookInPrice	进货价格	real	not null，大于0

create table tb_Book(
BookID  INTEGER PRIMARY KEY AUTOINCREMENT,
Bookisbn varchar(20) not null,
BookName varchar(20) not null,
BookPress varchar(20) not null,
BookPubDate varchar(20) not null,
BookAuthor varchar(10) not null,
BookInPrice REAL not null,
check(BookInPrice > 0 ))

(3)库存书籍tb_Storage

属性	说明	数据类型	约束
BookID	图书编号	int	主键，引用tb_Book的外键级联删除、更新
BookStoreMount	库存量	int	not null,大于0
BookStoretime	入库时间	date	not null
BookMPrice	售价	real	not null,大于0

create table tb_Storage(
BookID int,
BookStoreMount int not null,
BookStoretime  date not null,
primary key(BookID),
foreign key (BookID) references tb_Book
	on delete cascade
	on update cascade,
check (BookStoreMount > 0))

(4)买家购物车tb_Shopbasket

属性	说明	数据类型	约束
ShopID	订单编号	int	主码，引用tb_SOrder的外键，级联删除更新
BookID	图书ID	int	主码，引用tb_Book的外键，级联删除更新
ShopMount	图书数量	int	not null大于0
ShopPrice	图书单价	money	not null大于0

create table tb_Shopbasket(
ShopID int,
BookID int,
ShopMount int  not null,
ShopPrice money not null,
primary key (ShopID,BookID),
foreign key (ShopID) references tb_SOrder
	on delete cascade
	on update cascade,
foreign Key (BookID) references tb_Book
	on delete cascade
	on update cascade,
check(ShopMount > 0 ),
check(ShopPrice > 0 ))

(5)买家订单tb_SOrder

属性	说明	数据类型	约束
ShopID	订单编号	int	主码，自增
ShopSum	总价	money	not null，大于0
ShopState	订单状态	varchar(10)	默认未付款，取“已付款”/“未付款”

create table tb_SOrder(
ShopID int auto_increment,
ShopSum money not null,
ShopState varchar(20)  default'未付款' not null,
primary key (ShopID),
check (ShopSum > 0),
check (ShopState in ('已付款','未付款')))

（6）进货购物车tb_Inputbasket

属性	说明	数据类型	约束
InputID	订单编号	int	主码，引用tb_InOrder的外键，级联删除、更新
BookID	图书编号	int	主码，引用tb Book的外键，级联删除、更新
InputPrice	进货单价	real	not null，大于0
InputMount	进货数量	int	not null，大于0

create table tb_Inputbasket(
InputID int,
BookID int,
InputPrice money not null,
InputMount int not null,
primary key(InputID,BookID),
foreign key(InputID) references tb_InOrder
	on delete cascade
	on update cascade,
foreign key(BookID) references tb_Book
	on delete cascade
	on update cascade,
check(InputPrice > 0),
check(InputMount > 0))

(7)进货订单tb_InOrder

属性	说明	数据类型	约束
InputID	订单编号	int	主码，自增字段
InputSum	总价	real	not null，大于0
InputState	订单状态	varchar(10)	默认未付款，取“已付款”或者“未付款”/“已退货”/“订单完成”

create table tb_InOrder(
InputID int auto_increment,
InputSum money  not null,
InputState varchar(10) default'未付款' not null,
primary key(InputID),
check (InputSum > 0),
check (InputState in ('已付款','未付款')))

(8) 账单信息tb_Order

属性	说明	数据类型	约束
OrderID	账单编号	int	主码,自增字段
OrderTime	操作时间	varchar(20)	not null
OrderType	收支类型	varchar（5）	取+/—
OrderTotal	数额	real	not null，大于0

create table tb_Order(
OrderID int auto_increment,
OrderTime timestamp not null,
OrderType varchar(5) not null,
OrderTotal money not null,
primary key(OrderID),
check(OrderType in ('+','-')),
check(OrderTotal > 0))

总体代码：

create table tb_Admin(
AdminID int  auto_increment,
AdminName varchar(20) not null,
AdminPwd  varchar(20) not null,
AdminTruename varchar(20) not null,
AdminSex varchar(2) not null,
AdminAge int not null,
primary key(AdminID),
check(AdminSex in ('男','女')),
check(AdminAge > 0 and AdminAge < 120))

create table tb_Book(
BookID  INTEGER PRIMARY KEY AUTOINCREMENT,
Bookisbn varchar(20) not null,
BookName varchar(20) not null,
BookPress varchar(20) not null,
BookPubDate varchar(20) not null,
BookAuthor varchar(10) not null,
BookInPrice varchar(10) not null,
check(BookMPrice > 0 ))

create table tb_Storage(
BookID int,
BookStoreMount int not null,
BookStoretime  date not null,
primary key(BookID),
foreign key (BookID) references tb_Book
	on delete cascade
	on update cascade,
check (BookStoreMount > 0))

create table tb_Shopbasket(
ShopID int,
BookID int,
ShopMount int  not null,
ShopPrice money not null,
primary key (ShopID,BookID),
foreign key (ShopID) references tb_SOrder
	on delete cascade
	on update cascade,
foreign Key (BookID) references tb_Book
	on delete cascade
	on update cascade,
check(ShopMount > 0 ),
check(ShopPrice > 0 ))

create table tb_SOrder(
ShopID int auto_increment,
ShopSum money not null,
ShopState varchar(20)  default'未付款' not null,
primary key (ShopID),
check (ShopSum > 0),
check (ShopState in ('已付款','未付款')))

create table tb_Inputbasket(
InputID int,
BookID int,
InputPrice money not null,
InputMount int not null,
primary key(InputID,BookID),
foreign key(InputID) references tb_InOrder
	on delete cascade
	on update cascade,
foreign key(BookID) references tb_Book
	on delete cascade
	on update cascade,
check(InputPrice > 0),
check(InputMount > 0))

create table tb_InOrder(
InputID  INTEGER PRIMARY KEY AUTOINCREMENT，
InputSum money  not null,
InputState varchar(10) default'未付款'，
check (InputSum > 0),
check (InputState in ('已付款','未付款','已退货','订单完成')))

create table tb_InOrder(
InputID int auto_increment,
InputSum money  not null,
InputState varchar(10) default'未付款' not null,
primary key(InputID),
check (InputSum > 0),
check (InputState in ('已付款','未付款')))

需要进行修改的：

1.isbn需要加上unique约束

2.导入数据需要人工检查外键约束

3.主键自增需要换一个类型
INTEGER PRIMARY KEY
AUTOINCREMENT，并去掉后面的primay key
例子：
create table tb_InOrder(
InputID INTEGER PRIMARY KEY AUTOINCREMENT，
InputSum money not null,
InputState varchar(10) default’未付款’，
check (InputSum > 0),
check (InputState in (‘已付款’,‘未付款’,‘已退货’,‘订单完成’)))

4.money要改成real类型，去掉货币符号才可以获取值，获取用float类型获取，对应bind函数用double，column函数用double

目前遇到过的问题：

1.database locked？
不能同时在程序和sqlite browser中对数据库进行修改，sqlite不支持并行操作，需要重启？

2.？必须是英文字符

3.money要改成real类型，去掉货币符号才可以获取值，获取用float类型获取，对应bind函数用double，column函数用double

必须测试每个sql语句是否完成，用
rc = sqlite3_step(stmt);
if (rc == SQLITE_DONE)
{
printf(“成功创建新账户！”);
}

（storage的钱改为real