Question Two Consider the three transactions T1, T2, and T3, and the schedules S1 and S2 given below. Transaction T1: r1(x), 1(2), w1(x) Transaction T2: 12(z), r2(y), w2(z), w2(y) Transaction T3: r3(x), r3(y), w3(y) Schedule S1: r1(x), 12(z), r1(x); r3(x); r3(y); w1(x); w3(y); r2(y); w2(z); w2(y) Schedule S2: r1(x); (2(2), r3(x), r1(z), r2(y), r3(y), w1(x), w2(z), w3(y), w2(y) Draw the serializability (precedence) for S1 and S2 and state whether each schedule is conflict serializable. Write down the equivalent serial schedule(s) if a schedule is serializable.
Question Two Consider the three transactions T1, T2, and T3, and the schedules S1 and S2 given below. Transaction T1: r1(x), 1(2), w1(x) Transaction T2: 12(z), r2(y), w2(z), w2(y) Transaction T3: r3(x), r3(y), w3(y) Schedule S1: r1(x), 12(z), r1(x); r3(x); r3(y); w1(x); w3(y); r2(y); w2(z); w2(y) Schedule S2: r1(x); (2(2), r3(x), r1(z), r2(y), r3(y), w1(x), w2(z), w3(y), w2(y) Draw the serializability (precedence) for S1 and S2 and state whether each schedule is conflict serializable. Write down the equivalent serial schedule(s) if a schedule is serializable.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
![Question Two
LO2
Question Two
Consider the three transactions T1, T2, and T3, and the schedules S1 and S2
given below.
Transaction T1: r1(x), [1(z), w1(x)
Transaction T2: 2(2), r2(y), w2(z), w2(y)
Transaction T3: 13(x), r3(y), w3(y)
and
Schedule S1: r1(x), r2(z), r1(x), r3(x), r3(y), w1(x);, w3(y); r2(y), w2(z), w2(y)
Schedule S2: r1(x), r2(z), r3(x), r1(z), r2(y), r3(y), w1(x), w2(z), w3(y); w2(y)
Draw the serializability (precedence) for S1 and S2 and state whether each
schedule is conflict serializable. Write down the equivalent serial schedule(s) if
a schedule is serializable.
29°C uao](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4cbbbfec-8522-4f0f-a3d0-c0c4ea81d643%2F141d1a26-737c-4299-928f-b0fd3dd9f8f4%2F4eiprs6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Question Two
LO2
Question Two
Consider the three transactions T1, T2, and T3, and the schedules S1 and S2
given below.
Transaction T1: r1(x), [1(z), w1(x)
Transaction T2: 2(2), r2(y), w2(z), w2(y)
Transaction T3: 13(x), r3(y), w3(y)
and
Schedule S1: r1(x), r2(z), r1(x), r3(x), r3(y), w1(x);, w3(y); r2(y), w2(z), w2(y)
Schedule S2: r1(x), r2(z), r3(x), r1(z), r2(y), r3(y), w1(x), w2(z), w3(y); w2(y)
Draw the serializability (precedence) for S1 and S2 and state whether each
schedule is conflict serializable. Write down the equivalent serial schedule(s) if
a schedule is serializable.
29°C uao
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