Database System Concepts
7th Edition
ISBN: 9781260084504
Author: Abraham Silberschatz, S. Sudarshan, Abraham, Henry Korth, Silberschatz Abraham, Silberschatz Professor
Publisher: McGraw-Hill Education
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Chapter 3, Problem 12E
Explanation of Solution
a.
Query:
Insert into course(course_id, title, dept_name, credits)values (‘CS-001’, ‘Weekly Seminar’, ‘Comp...
Explanation of Solution
b.
Query:
insert into section(course_id, sec_id, semester, year) values (‘CS-001’, 1, ‘Autumn’, 2017)
Explanation:
The above quer...
Explanation of Solution
c.
Query:
insert into takes(ID, course_id, sec_id, semester, year)select ID, ‘CS-001’, 1, ‘Autumn’, 2017 from student where dept_name=’Comp...
Explanation of Solution
d.
Query:
delete from takes where (course_id=’CS-001’) and (sec_id=1) and (semester=’Autumn’) and (year=2017) and (ID in (select ID, name fro...
Explanation of Solution
e.
Query:
delete from courses where course_id=’CS-001’;
Explanation:
Explanation of Solution
f
Query:
delete from takes where course_id in (select course_id from course where lower(title)like ‘advanced’);
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Chapter 3 Solutions
Database System Concepts
Ch. 3 - Prob. 1PECh. 3 - Prob. 2PECh. 3 - Prob. 3PECh. 3 -
Suppose that we have a relation marks(ID, score)...Ch. 3 - Suppose that we have a relation marks(ID, score)...Ch. 3 -
The SQL like operator is case sensitive (in most...Ch. 3 - Prob. 7PECh. 3 - Prob. 8PECh. 3 - Prob. 9PECh. 3 - Prob. 10PE
Ch. 3 - Prob. 11ECh. 3 - Prob. 12ECh. 3 - Prob. 13ECh. 3 -
Consider the insurance database of Figure 3.17,...Ch. 3 - Prob. 15ECh. 3 - Prob. 16ECh. 3 - Prob. 17ECh. 3 - Prob. 18ECh. 3 -
List two reasons why null values might be...Ch. 3 - Prob. 20ECh. 3 - Prob. 21ECh. 3 - Prob. 22ECh. 3 - Prob. 23ECh. 3 - Prob. 24ECh. 3 - Prob. 25ECh. 3 - Prob. 26ECh. 3 - Using the university schema, write an SQL query to...Ch. 3 - Prob. 28ECh. 3 - Prob. 29ECh. 3 - Prob. 30ECh. 3 - Prob. 31ECh. 3 - Prob. 32ECh. 3 - Prob. 33ECh. 3 - Prob. 34ECh. 3 - Prob. 35E
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