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T1 T2 Read(x) Read(x) х-у-50%; Read(y) y=y+50; read(z) x=y-50; Read(y) y=y+50; read(z) z=z+100; z=z+100; write(x) write(y) write(x) write(y) write(z) write(z) Table: Schedulel Consider the above schedule, 1. Is the schedule recoverable? 2. Use two-phase and time-stamp based protocol to resolve concurrency problem

T1 T2 Read(x) Read(x) х-у-50%; Read(y) y=y+50; read(z) x=y-50; Read(y) y=y+50; read(z) z=z+100; z=z+100; write(x) write(y) write(x) write(y) write(z) write(z) Table: Schedulel Consider the above schedule, 1. Is the schedule recoverable? 2. Use two-phase and time-stamp based protocol to resolve concurrency problem

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...
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T1 T2 Read(x) x=y-50; Read(y) Read(x) x=y-50; Read(y) y=y+50; read(z) =z+100; У-у+50; read(z) z=z+100; write(x) write(y) write(x) write(y) write(z) write(z) Table: Schedulel Consider the above schedule, 1. Is the schedule recoverable? 2. Use two-phase and time-stamp based protocol to resolve concurrency problem
Transcribed Image Text:T1 T2 Read(x) x=y-50; Read(y) Read(x) x=y-50; Read(y) y=y+50; read(z) =z+100; У-у+50; read(z) z=z+100; write(x) write(y) write(x) write(y) write(z) write(z) Table: Schedulel Consider the above schedule, 1. Is the schedule recoverable? 2. Use two-phase and time-stamp based protocol to resolve concurrency problem
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