a) Ax(OB.b2-10B) b) AXA.a4=B.b3 B c) AN (A.a1=B.b1 AND A.a3=B.b2) B
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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![3.
Using tables given below, show the results of the following operations given in relational
algebra.
A
a1
a2
аз
a4
c1
c2
2
3
4
4
4
1
8
12
3
4
6
7
4
4
12
4
7
7
6
b2
4
b1
b3
7
12
3
7
4
12
11
7
4
a) Ax(OB.b2>10B)
b) AX A.a4=B.b3 B
c) AM (A.a1=B.b1 AND A.a3=B.b2) B
d) BU (Пlа1, а2, а3) А)
e) P (d1, d2, d3)(c1 ICOUNT c2, SUM c2 C)
) C+ (P (62) ( T(a3) A))](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feec2cb69-f3d9-4e4b-8db8-4e702423f01b%2F56074bca-c162-4f8e-bbb4-95ef29f3c3f3%2Fc4veoyj_processed.png&w=3840&q=75)
Transcribed Image Text:3.
Using tables given below, show the results of the following operations given in relational
algebra.
A
a1
a2
аз
a4
c1
c2
2
3
4
4
4
1
8
12
3
4
6
7
4
4
12
4
7
7
6
b2
4
b1
b3
7
12
3
7
4
12
11
7
4
a) Ax(OB.b2>10B)
b) AX A.a4=B.b3 B
c) AM (A.a1=B.b1 AND A.a3=B.b2) B
d) BU (Пlа1, а2, а3) А)
e) P (d1, d2, d3)(c1 ICOUNT c2, SUM c2 C)
) C+ (P (62) ( T(a3) A))
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