Homework Help is Here – Start Your Trial Now!
Engineering
Computer Engineering
Problem 11.1. Which of the following histories are conflict equivalent? H1 ={W2(x),W1(x),R3(x),R1(x), W2(y), R3 (y), R3(z),R2(x)} H2 ={R3(z), R3(y), W2 (y), R2(z),W1 (x), R3 (x), W2(x),R1 (x)} H3 ={R3(z),W2(x), W2 (y), R1 (x), R3(x), R2(z), R3(y), W1 (x)} H4 ={R2(z), W2(x), W2(y),W1 (x), R1 (x), R3(x),R3(z),R3(y)}

Problem 11.1. Which of the following histories are conflict equivalent? H1 ={W2(x),W1(x),R3(x),R1(x), W2(y), R3 (y), R3(z),R2(x)} H2 ={R3(z), R3(y), W2 (y), R2(z),W1 (x), R3 (x), W2(x),R1 (x)} H3 ={R3(z),W2(x), W2 (y), R1 (x), R3(x), R2(z), R3(y), W1 (x)} H4 ={R2(z), W2(x), W2(y),W1 (x), R1 (x), R3(x),R3(z),R3(y)}

Computer Networking: A Top-Down Approach (7th Edition)
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...
See similar textbooks
icon
Related questions
Question
Problem 11.1. Which of the following histories are conflict equivalent? H1 ={W2(x),W1 (x), R3(x), R1(x), W2(y), R3 (y), R3 (z), R2(x)} H, ={R3(z), R3(y), W2 (y), R2(z), W1 (x), R3 (x), W2(x), R1 (x)} %3D H3 ={R3(z),W2(x), W2 (y), R1 (x), R3(x), R2(z),R3(y), W1 (x)} H4 ={R2(z), W2(x),W2(y), W1 (x), R1(x), R3(x),R3(z), R3(y)} %3D Problem 11.2. Which of the above histories H¡ – H4 are serializable? Problem 11.3. Give a history of two complete transactions which is not allowed by a strict 2PL scheduler but is accepted by the basic 2PL scheduler.
Transcribed Image Text:Problem 11.1. Which of the following histories are conflict equivalent? H1 ={W2(x),W1 (x), R3(x), R1(x), W2(y), R3 (y), R3 (z), R2(x)} H, ={R3(z), R3(y), W2 (y), R2(z), W1 (x), R3 (x), W2(x), R1 (x)} %3D H3 ={R3(z),W2(x), W2 (y), R1 (x), R3(x), R2(z),R3(y), W1 (x)} H4 ={R2(z), W2(x),W2(y), W1 (x), R1(x), R3(x),R3(z), R3(y)} %3D Problem 11.2. Which of the above histories H¡ – H4 are serializable? Problem 11.3. Give a history of two complete transactions which is not allowed by a strict 2PL scheduler but is accepted by the basic 2PL scheduler.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Computer Networking: A Top-Down Approach (7th Edi…
Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON
Computer Organization and Design MIPS Edition, Fi…
Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science
Network+ Guide to Networks (MindTap Course List)
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning
Concepts of Database Management
Concepts of Database Management
Computer Engineering
ISBN:
9781337093422
Author:
Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:
Cengage Learning
Prelude to Programming
Prelude to Programming
Computer Engineering
ISBN:
9780133750423
Author:
VENIT, Stewart
Publisher:
Pearson Education
Sc Business Data Communications and Networking, T…
Sc Business Data Communications and Networking, T…
Computer Engineering
ISBN:
9781119368830
Author:
FITZGERALD
Publisher:
WILEY
SEE MORE TEXTBOOKS