数据库学习笔记（七）

USE test01

GO

CREATE TABLE course

(

courseno nchar(6) NOT NULL,

cname nchar(20) NULL,

type nchar(8) NULL,

period tinyint NULL,

credit numeric(4, 1) NULL,

CONSTRAINT PK_course PRIMARY KEY CLUSTERED(Courseno asc)

)ON [PRIMARY]

--向test01中建立学生分数表score

--并且阴招两个主键的排序为升序

USE test01

CREATE Table score(

studentno nchar(10) NOT NULL,

courseno nchar(6) NOT NULL,

usually numeric(6, 2) NULL,

final numeric(6, 2) NULL,

CONSTRAINT PK_score PRiMARY KEY CLUSTERED(

studentno asc,

courseno asc

)

)

--向test01中天剑teacher的表

USE test01

GO

CREATE TABLE teacher(

teacherno nchar(6) NOT NULL,

tname nchar(8) NULL,

major nchar(10) NULL,

prof nchar(10) NOT NULL,

department nchar(12) NULL,

CONSTRAINT PK_teacher PRIMARY KEY CLUSTERED(

teacherno asc

)