数据库系统概论第三章建表&插入SQL语句

 1 --Edit by David @ HeBei University 2018
 2 
 3 USE MrDavid  
 4 GO 
 5 
 6 DROP TABLE IF EXISTS SC
 7 DROP TABLE IF EXISTS Student
 8 DROP TABLE IF EXISTS Course
 9 
10 CREATE TABLE Student          
11  (    
12  Sno CHAR(9) PRIMARY KEY,         /* 列级完整性约束条件,Sno是主码*/                  
13  Sname CHAR(20) UNIQUE,             /* Sname取唯一值*/
14  Ssex CHAR(2),
15  Sage SMALLINT,
16  Sdept CHAR(20)
17  ); 
18 
19 CREATE TABLE  Course
20  (    
21  Cno CHAR(4) PRIMARY KEY,
22  Cname CHAR(40),            
23  Cpno CHAR(4),                                         
24  Ccredit SMALLINT,
25  FOREIGN KEY (Cpno) REFERENCES  Course(Cno) 
26  ); 
27 
28 CREATE TABLE  SC
29  (
30  Sno CHAR(9), 
31  Cno CHAR(4),  
32  Grade SMALLINT,
33  PRIMARY KEY (Sno,Cno),                     /* 主码由两个属性构成，必须作为表级完整性进行定义*/
34  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 */
35  FOREIGN KEY (Cno)REFERENCES Course(Cno)     /* 表级完整性约束条件， Cno是外码，被参照表是Course*/
36         ); 
37 
38 
39 INSERT  INTO  Student (Sno,Sname,Ssex,Sdept,Sage) VALUES (\'201215121\',\'李勇\',\'男\',\'CS\',20);
40 INSERT  INTO  Student (Sno,Sname,Ssex,Sdept,Sage) VALUES (\'201215122\',\'刘晨\',\'女\',\'CS\',19);
41 INSERT  INTO  Student (Sno,Sname,Ssex,Sdept,Sage) VALUES (\'201215123\',\'王敏\',\'女\',\'MA\',18);
42 INSERT  INTO  Student (Sno,Sname,Ssex,Sdept,Sage) VALUES (\'201215125\',\'张立\',\'男\',\'IS\',19);
43 INSERT  INTO  Student (Sno,Sname,Ssex,Sdept,Sage) VALUES (\'201215128\',\'陈冬\',\'男\',\'IS\',20);
44 
45 SELECT * FROM Student
46 
47 INSERT  INTO Course(Cno,Cname,Cpno,Ccredit)    VALUES (\'1\',\'数据库\',NULL,4);
48 INSERT  INTO Course(Cno,Cname,Cpno,Ccredit)    VALUES (\'2\',\'数学\',NULL,4);
49 INSERT  INTO Course(Cno,Cname,Cpno,Ccredit)    VALUES (\'3\',\'信息系统\',NULL,4);
50 INSERT  INTO Course(Cno,Cname,Cpno,Ccredit)    VALUES (\'4\',\'操作系统\',NULL,4);
51 INSERT  INTO Course(Cno,Cname,Cpno,Ccredit)    VALUES (\'5\',\'数据结构\',NULL,4);
52 INSERT  INTO Course(Cno,Cname,Cpno,Ccredit)    VALUES (\'6\',\'数据处理\',NULL,4);
53 INSERT  INTO Course(Cno,Cname,Cpno,Ccredit)    VALUES (\'7\',\'Pascal语言\',NULL,4);
54 
55 UPDATE Course SET Cpno = \'5\' WHERE Cno = \'1\' 
56 UPDATE Course SET Cpno = \'1\' WHERE Cno = \'3\' 
57 UPDATE Course SET Cpno = \'6\' WHERE Cno = \'4\' 
58 UPDATE Course SET Cpno = \'7\' WHERE Cno = \'5\' 
59 UPDATE Course SET Cpno = \'6\' WHERE Cno = \'7\' 
60 
61 SELECT * FROM Course
62 
63 INSERT  INTO SC(Sno,Cno,Grade) VALUES (\'201215121 \',\'1\',92);
64 INSERT  INTO SC(Sno,Cno,Grade) VALUES (\'201215121 \',\'2\',85);
65 INSERT  INTO SC(Sno,Cno,Grade) VALUES (\'201215121 \',\'3\',88);
66 INSERT  INTO SC(Sno,Cno,Grade) VALUES (\'201215122 \',\'2\',90);
67 INSERT  INTO SC(Sno,Cno,Grade) VALUES (\'201215122 \',\'3\',80);
68 
69 SELECT * FROM SC
数据库系统概论 第三章 建表&插入SQL语句

数据库系统概论第三章建表&插入SQL语句
