标签：unicode har 课程 时间 str 实验 查看 数据库 check
CREATE DATABASE JWGL ;
-- 教务管理数据库
USE jwgl ;
-- 查看数据库的字符集
SELECT DATABASE() ;
-- 创建学生表Student
CREATE TABLE Student (
Sno CHAR(8) NOT NULL PRIMARY KEY,
-- 学生学号
Sname VARCHAR (10) NOT NULL,
-- 学生姓名
Sex ENUM (‘男‘, ‘女‘) NOT NULL DEFAULT ‘男‘,
-- 性别
Age ENUM (‘15‘,‘16‘,‘17‘,‘18‘,‘19‘,‘20‘,‘21‘,‘22‘,‘23‘,‘24‘,‘25‘,‘26‘,‘27‘,‘28‘,‘29‘,‘30‘) NOT NULL DEFAULT ‘20‘,
Phonenumber VARCHAR (20) UNICODE,
-- 手机号
Sdept VARCHAR (20) NOT NULL
) ;
-- 创建课程表Course
CREATE TABLE Course (
Cno CHAR(10) NOT NULL PRIMARY KEY,
Cname VARCHAR (20) UNICODE NOT NULL,
Total_perior TINYINT (1) DEFAULT ‘64‘ CHECK (Total_perior BETWEEN 32
AND 108),
Week_perior TINYINT (1) DEFAULT ‘4‘ CHECK (Week_perior BETWEEN 2
AND 7),
credit TINYINT (1) NOT NULL DEFAULT ‘4‘ CHECK (credit BETWEEN 1
AND 7),
Pcno CHAR(10)
) ;
-- 学生选课表SC
CREATE TABLE SC (
Sno CHAR(8) NOT NULL,
Cno CHAR(10) NOT NULL,
Grade TINYINT (1) CHECK (Grade BETWEEN 0
AND 100),
PRIMARY KEY (Sno,Cno),
FOREIGN KEY (Sno) REFERENCES Student (Sno),
/*表级完整性约束条件，Sno是外码，被参照表是Student*/
FOREIGN KEY (Cno) REFERENCES Course (Cno)
/*表级完整性约束条件，Sno是外码，被参照表是Course*/
) ;
CREATE TABLE Customers(
CustomerID int IDENTITY(1,1) PRIMARY KEY,
CName varchar(8) NOT NULL ,
Address varchar(50),
City varchar(10),
Tel varchar(20) UNIQUE,
Company varchar(50),
Birthday datetime,
Type tinyint DEFAULT 1);
CREATE TABLE Goods (
GoodsID int CONSTRAINT C1 PRIMARY KEY ,
GoodsName varchar(20) NOT NULL,
Price money,
Description varchar(200),
Storage int,
Provider varchar(50),
Status tinyint DEFAULT(0));
CREATE TABLE Orders (
OrderID int IDENTITY(1,1) CONSTRAINT C2 PRIMARY KEY ,
GoodsID int NOT NULL REFERENCES Goods(GoodsID) ON DELETE
CASCADE,
CustomerID int NOT NULL FOREIGN KEY(CustomerID)
REFERENCES Customers (CustomerID) ON UPDATE CASCADE
ON DELETE NO ACTION,
Quantity int NOT NULL CONSTRAINT C3 CHECK(Quantity >0),
OrderSum money NOT NULL,
OrderDate datetime DEFAULT(getdate()) );
CREATE DATABASE Market ;
-- 创建Market数据库
USE Market ;
-- 客户基本信息表Customers
CREATE TABLE Customers (
CustomerID INT PRIMARY KEY AUTO_INCREMENT,
CName VARCHAR (8) NOT NULL,
Address VARCHAR (50),
City VARCHAR (10),
Tel VARCHAR (20) UNIQUE,
Company VARCHAR (50),
Birthday DATETIME,
TYPE TINYINT DEFAULT 1
) ;
-- 货品信息表Goods
CREATE TABLE Goods (
-- GoodsID INT CONSTRAINT C1 PRIMARY KEY,
GoodsID INT PRIMARY KEY,
GoodsName VARCHAR (20) NOT NULL,
Price DOUBLE,
Description VARCHAR (200),
STORAGE INT,
Provider VARCHAR (50),
STATUS TINYINT DEFAULT 0
) ;
-- 订单信息表Orders
CREATE TABLE Orders (
-- OrderID INT IDENTITY (1, 1) CONSTRAINT C2 PRIMARY KEY,
OrderID INT PRIMARY KEY AUTO_INCREMENT,
GoodsID INT NOT NULL REFERENCES Goods (GoodsID) ON DELETE CASCADE,
-- CustomerID INT NOT NULL FOREIGN KEY (CustomerID) REFERENCES Customers (CustomerID) ON DELETE NO ACTION,
CustomerID INT NOT NULL,
Quantity INT NOT NULL CHECK (Quantity > 0),
OrderSum DOUBLE NOT NULL,
-- OrderDate DATETIME DEFAULT(getdate ()),
OrderDate TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (CustomerID) REFERENCES Customers(CustomerID),
FOREIGN KEY (GoodsID) REFERENCES Goods(GoodsID)
) ;
问题：使用T-SQL语句在SPJ数据库中创建第2章习题10中的4张表：供应商表S、零件表P、工程项目表J和供应情况表SPJ，数据类型和长度自行设计，注意要同时定义主键、外键和其他的数据完整性。
sql语句：
CREATE DATABASE SPJ;
USE spj;
-- 零件表P
CREATE TABLE P(
Pno CHAR(2) NOT NULL PRIMARY KEY,
Pname VARCHAR(20) NOT NULL,
Color CHAR(4) NOT NULL,
Weight TINYINT NOT NULL
);
-- 供应商表S
CREATE TABLE S(
Sno CHAR(2) NOT NULL PRIMARY KEY,
Sname VARCHAR(20) NOT NULL,
STATUS TINYINT NOT NULL,
City VARCHAR(10) NOT NULL
);
-- 工程项目表J
CREATE TABLE J(
Jno CHAR(2) NOT NULL PRIMARY KEY,
Jname VARCHAR(20) NOT NULL,
City VARCHAR(20) NOT NULL
);
-- 供应情况表SPJ
CREATE TABLE SPJ(
Sno CHAR(2) NOT NULL,
Pno CHAR(2) NOT NULL,
Jno CHAR(2) NOT NULL,
Qity INT NOT NULL,
PRIMARY KEY(Sno,Pno,Jno),
FOREIGN KEY (Sno) REFERENCES S(Sno),
FOREIGN KEY (Pno) REFERENCES P(Pno),
FOREIGN KEY (Jno) REFERENCES J(Jno)
);
问题： 使用T-SQL语句在图书借阅管理数据库TSGL中建立图书、读者和借阅3个表，其结构为
图书（书号，书名，类别，出版社，作者，定价，出版时间）
读者（借书证号，姓名，单位，性别，地址，电话号码）
借阅（书号，借书证号，借阅日期）
要求为属性选择合适的数据类型，定义每个主键、外键，是否允许空值等数据完整性约束。
sql语句
-- 图书管理数据库
CREATE DATABASE TSGL;
USE TSGL;
-- 图书Book（书号ISBN，书名BookName，类别BookType，出版社PressNo，作者Author，定价Price，出版时间PublishTime）
CREATE TABLE Book(
ISBN CHAR(20) NOT NULL PRIMARY KEY,
BookName TEXT,
BookType TEXT ,
PressNo VARCHAR(20),
Author VARCHAR(20),
Price DOUBLE,
PublishTime DATETIME
);
-- 读者Reader（借书证号ReaderAccount，姓名ReaderName，单位ReaderCompany，性别Sex，地址Address，电话号码Tel）
CREATE TABLE Reader(
ReaderAccount CHAR(15) NOT NULL PRIMARY KEY,
ReaderName VARCHAR(8),
ReaderCompany VARCHAR(20),
ReaderSex ENUM (‘男‘, ‘女‘) NOT NULL DEFAULT ‘男‘,
ReaderAddress TEXT,
ReaderTel CHAR(12)
);
-- 借阅BorrowR（书号ISBN，借书证号ReaderAccount，借阅日期BorrowTime）
CREATE TABLE Borrow(
ISBN CHAR(20) NOT NULL,
ReaderAccount CHAR(15) NOT NULL,
BorrowTime DATETIME NOT NULL,
PRIMARY KEY (ISBN,ReaderAccount),
FOREIGN KEY (ISBN) REFERENCES Book(ISBN),
FOREIGN KEY (ReaderAccount)REFERENCES Reader(ReaderAccount)
);
标签：unicode har 课程 时间 str 实验 查看 数据库 check
原文地址：https://www.cnblogs.com/CloudGuest/p/14089628.html
