shell⯈ sqlplus C##user_id/password@xe 

SQL*Plus: Release 23.0.0.0.0 - Production on Fri Aug 8 15:22:18 2025
Version 23.4.0.24.05

Copyright (c) 1982, 2024, Oracle.  All rights reserved.
Last Successful login time: Fri Aug 08 2025 15:17:08 -05:00

Connected to:
Oracle Database 21c Express Edition Release 21.0.0.0.0 - Production
Version 21.3.0.0.0

SQL> DROP TABLE take1; 

Table dropped.

SQL> DROP TABLE course1; 

Table dropped.

SQL> DROP TABLE student1; 

Table dropped.

SQL> DROP SEQUENCE student1_seq; 

Sequence dropped.

SQL> CREATE SEQUENCE student1_seq START WITH 1 INCREMENT BY 1 CACHE 100; 

Sequence created.

SQL> CREATE TABLE student1 ( 
  2    sid    INTEGER PRIMARY KEY, 
  3    name   VARCHAR(64) NOT NULL, 
  4    email  VARCHAR(32) NOT NULL ); 

Table created.

SQL> INSERT INTO student1 VALUES( student1_seq.NEXTVAL, 
  2    'Super Mario', 'super.mario@und.edu' ); 

1 row created.

SQL> INSERT INTO student1 VALUES( student1_seq.NEXTVAL, 
  2    'Digi Mon', 'digi.mon@ndus.edu' ); 

1 row created.

SQL> INSERT INTO student1 VALUES( student1_seq.NEXTVAL, 
  2    'Poke Mon', 'poke.mon@und.edu' ); 

1 row created.

SQL> INSERT INTO student1 VALUES( student1_seq.NEXTVAL, 
  2    'Sponge Bob', 'sponge@gmail.com' ); 

1 row created.

SQL> CREATE TABLE course1 ( 
  2    cid     CHAR(12) PRIMARY KEY, 
  3    title   VARCHAR(64) NOT NULL, 
  4    room    VARCHAR(16) NOT NULL, 
  5    credit  INTEGER NOT NULL ); 

Table created.

SQL> INSERT INTO course1 VALUES( 'CSCI260', 
  2    '.NET and World Wide Web Programming', 'CEC 205', 3 ); 

1 row created.

SQL> INSERT INTO course1 VALUES( 'DATA520', 
  2    'Databases', 'Upson II 265', 3 ); 

1 row created.

SQL> INSERT INTO course1 VALUES( 'DATA525', 
  2    'Data Engineering and Mining', 'Harrington 218', 3 ); 

1 row created.

SQL> INSERT INTO course1 VALUES( 'CSCI520', 
  2    'Advanced Databases', 'Harrington 364', 3 ); 

1 row created.

SQL> CREATE TABLE take1 ( 
  2    sid       INTEGER NOT NULL, 
  3    cid       CHAR(12) NOT NULL, 
  4    semester  VARCHAR(12) NOT NULL, 
  5    PRIMARY KEY ( sid, cid ), 
  6    FOREIGN KEY ( sid ) REFERENCES student1( sid ) ON DELETE CASCADE, 
  7    FOREIGN KEY ( cid ) REFERENCES course1( cid ) ON DELETE CASCADE ); 

Table created.

SQL> INSERT INTO take1 SELECT sid, 'DATA520', 'Fall 2022' 
  2    FROM student1 WHERE name='Poke Mon'; 

1 row created.

SQL> INSERT INTO take1 SELECT sid, 'DATA525', 'Fall 2022' 
  2    FROM student1 WHERE name='Poke Mon'; 

1 row created.

SQL> INSERT INTO take1 SELECT sid, 'CSCI260', 'Fall 2022' 
  2    FROM student1 WHERE name='Digi Mon'; 

1 row created.

SQL> INSERT INTO take1 SELECT sid, 'CSCI520', 'Spring 2023' 
  2    FROM student1 WHERE name='Sponge Bob'; 
 
1 row created.

SQL> SELECT s.name, c.title FROM student1 s, course1 c, take1 t 
  2    WHERE UPPER(s.name) LIKE '%MON%' AND s.sid=t.sid AND t.cid=c.cid; 

NAME                  TITLE
-----------------     ----------------------------------------
Digi Mon              .NET and World Wide Web Programming
Poke Mon              Databases
Poke Mon              Data Engineering and Mining

SQL> COMMIT; 
SQL> EXIT; 
Disconnected from Oracle Database 21c Express Edition Release 21.0.0.0.0 - Production
Version 21.3.0.0.0

shell⯈