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SQL查询语言练习
阅读量:411 次
发布时间:2019-03-06

本文共 1747 字,大约阅读时间需要 5 分钟。

学生信息管理系统数据库设计与测试数据插入

数据库创建与表结构设计

数据库创建

USE masterGOIF EXISTS(SELECT * FROM sysdatabases WHERE name='MyStudentInfoManage')    DROP DATABASE MyStudentInfoManageGOCREATE DATABASE MyStudentInfoManageGOUSE MyStudentInfoManageGO

学生表创建

IF EXISTS(SELECT * FROM sysobjects WHERE name='Student')    DROP TABLE StudentGOCREATE TABLE Student(    S# INT NOT NULL PRIMARY KEY,    Sname NVARCHAR(20) NOT NULL,    Sage INT NOT NULL,    Ssex CHAR(2) NOT NULL);

教师表创建

IF EXISTS(SELECT * FROM sysobjects WHERE name='Teacher')    DROP TABLE TeacherGOCREATE TABLE Teacher(    T# INT NOT NULL PRIMARY KEY,    Tname NVARCHAR(20) NOT NULL);

课程表创建

IF EXISTS(SELECT * FROM sysobjects WHERE name='Course')    DROP TABLE CourseGOCREATE TABLE Course(    C# INT NOT NULL PRIMARY KEY,    Cname NVARCHAR(20) NOT NULL,    T# INT NOT NULL REFERENCES dbo.Teacher(T#));

成绩表创建

IF EXISTS(SELECT * FROM sysobjects WHERE name='SC')    DROP TABLE SCGOCREATE TABLE SC(    S# INT NOT NULL REFERENCES dbo.Student(S#),    C# INT NOT NULL REFERENCES dbo.Course(C#),    Score INT NOT NULL,    CONSTRAINT FK_Student_Course PRIMARY KEY (S#, C#));

测试数据插入

学生表测试数据插入

DELETE FROM dbo.Student;INSERT INTO dbo.Student    (S#, Sname, Sage, Ssex)VALUES    ('001', '张三', 20, '男'),    ('002', '李四', 21, '男'),    ('003', '王五', 22, '女'),    ('004', '周六', 18, '女');

教师表测试数据插入

DELETE FROM dbo.Teacher;INSERT INTO dbo.Teacher    (T#, Tname)VALUES    ('01', '叶平');

课程表测试数据插入

DELETE FROM dbo.Course;INSERT INTO dbo.Course    (C#, Cname, T#)VALUES    ('001', '语文', '01'),    ('002', '数学', '01'),    ('0003', '英语', '01');

成绩表测试数据插入

DELETE FROM dbo.SC;INSERT INTO dbo.SC    (S#, C#, Score)VALUES    ('001', '001', 90);

以上脚本用于创建一个学生信息管理系统所需的数据库表结构,并插入测试数据。数据库名称为MyStudentInfoManage,包含学生、教师、课程和成绩四个表,数据以SQL格式提供,便于直接使用。

转载地址:http://gxxkz.baihongyu.com/

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