数据库

1、根据.上述语义画出ER图。

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2、将ER模型转换成数据表，并指出每个数据表的主键。

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3、根据建立的数据表，在SQL Server 2008中建表

0F7DYUMHJ5TM1Y6YCY0Y42N.jpg

use ldz2017270397 
create table cashier
(
id int not null primary key,
name varchar(20)not null,
password varchar(30) not null,
tel varchar(40),
);

create table storekeeper
(
number varchar(50),
id int not null primary key,
name varchar(20)not null,
password varchar(30) not null,
tel varchar(40),
);

create table provider
(
id int not null primary key,
name varchar(20)not null,
wheee varchar(50) not null,
people varchar(20),
tel varchar(40),
);

create table goods
(
id int not null primary key,
name varchar(20)not null,
price varchar(30) not null,

);


insert into storekeeper
values(2001,'郭靖','123','15888888888'),
      (2002,'张无忌','123','15988888888'),
      (2003,'令狐冲','123','15588888888'),
      (2004,'老张','123','15388888888');
      select*from storekeeper;
      
      insert into cashier 
values(2001,'郭靖','123','15888888888'),
      (2002,'张无忌','123','15988888888'),
      (2003,'令狐冲','123','15588888888'),
      (2004,'老张','123','15388888888');
      select*from cashier ;
      
      insert into goods 
values(2001,'猪宝贝','123'),
      (2002,'亲嘴烧','123'),
      (2003,'辣条','123'),
      (2004,'老干妈','123');
      select*from goods ;
      
      insert into provider 
values(2001,'辣条','重庆','周三','18711111111'),
      (2002,'猪宝贝','上海','李四','18722222222'),
      (2003,'亲嘴烧','北京','王麻子','18733333333'),
      (2004,'老干妈','湖北','张全蛋','18744444444');
      select*from provider ;```