–1.學生表
student(s_id,s_name,s_birth,s_***) –學生編號,學生姓名, 出生年月,學生性別
–2.課程表
course(c_id,c_name,t_id) – –課程編號, 課程名稱, 教師編號
–3.教師表
teacher(t_id,t_name) –教師編號,教師姓名
–4.成績表
score(s_id,c_id,s_score) –學生編號,課程編號,分數
–建表–學生表
create
table
`student`
(`s_id`
varchar(20
),`s_name`
varchar(20
)not
null
default'',
`s_birth`
varchar(20
)not
null
default'',
`s_***`
varchar(10
)not
null
default'',
primary
key(
`s_id`))
;--課程表
create
table
`course`
(`c_id`
varchar(20
),`c_name`
varchar(20
)not
null
default'',
`t_id`
varchar(20
)not
null
,primary
key(
`c_id`))
;--教師表
create
table
`teacher`
(`t_id`
varchar(20
),`t_name`
varchar(20
)not
null
default'',
primary
key(
`t_id`))
;--成績表
create
table
`score`
(`s_id`
varchar(20
),`c_id`
varchar(20
),`s_score`
int(3)
,primary
key(
`s_id`
,`c_id`))
;--插入學生表測試資料
insert
into student values
('01'
,'趙雷'
,'1990-01-01'
,'男');
insert
into student values
('02'
,'錢電'
,'1990-12-21'
,'男');
insert
into student values
('03'
,'孫風'
,'1990-05-20'
,'男');
insert
into student values
('04'
,'李雲'
,'1990-08-06'
,'男');
insert
into student values
('05'
,'周梅'
,'1991-12-01'
,'女');
insert
into student values
('06'
,'吳蘭'
,'1992-03-01'
,'女');
insert
into student values
('07'
,'鄭竹'
,'1989-07-01'
,'女');
insert
into student values
('08'
,'王菊'
,'1990-01-20'
,'女');
--課程表測試資料
insert
into course values
('01'
,'語文'
,'02');
insert
into course values
('02'
,'數學'
,'01');
insert
into course values
('03'
,'英語'
,'03');
--教師表測試資料
insert
into teacher values
('01'
,'張三');
insert
into teacher values
('02'
,'李四');
insert
into teacher values
('03'
,'王五');
--成績表測試資料
insert
into score values
('01'
,'01',80
);insert
into score values
('01'
,'02',90
);insert
into score values
('01'
,'03',99
);insert
into score values
('02'
,'01',70
);insert
into score values
('02'
,'02',60
);insert
into score values
('02'
,'03',80
);insert
into score values
('03'
,'01',80
);insert
into score values
('03'
,'02',80
);insert
into score values
('03'
,'03',80
);insert
into score values
('04'
,'01',50
);insert
into score values
('04'
,'02',30
);insert
into score values
('04'
,'03',20
);insert
into score values
('05'
,'01',76
);insert
into score values
('05'
,'02',87
);insert
into score values
('06'
,'01',31
);insert
into score values
('06'
,'03',34
);insert
into score values
('07'
,'02',89
);insert
into score values
('07'
,'03',98
);
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