Question TwoLO2Question TwoConsider the three transactions T1, T2, and T3, and the schedules S1 and S2given 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)andSchedule 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 eachschedule is conflict serializable. Write down the equivalent serial schedule(s) ifa schedule is serializable.29°C uao

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

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