Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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  1. Create two different “Views” using below relations, then Alter one of the Views and Drop the other one.  After that discuss why Views are used by giving examples using relations from the tables below.

 

Student Relation

Student_ID Student_Name Dept_Name
0000 AAAAA Computer Science
1111 BBBBB Computer Science
2222 CCCCC Business Administration
3333 DDDDD Education
4444 EEEEE Physics
5555 FFFFF History

 

Student_Courses Relation

Student_ID Course_ID Section  Year Grade
0000 CS 2203 2 2020 A
0000 CS 1101 1 2019 A
1111 CS 1101 5 2019 B
1111 CS 1102 1 2019 B
1111 CS 2204 1 2020 A
1111 CS 2401 1 2020 A
2222 BUS 1101 3 2019 C
2222 BUS 2201 1 2020 B
2222 BUS 3302 1 2020 B
3333 EDUC 5010 1  2019 A
3333 EDUC 5210 1  2020 B
4444 PHY 1101 4  2019 A
4444 PHY 2202 1  2020 C
4444 PHY 3304 1  2020 A
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