Consider the following schedule for transactions T, T2 and T3:Which one of the schedules below is the correct serialization of the belowT2T3T1Read (X)Read (Y)Read ( Y)Write (Y)Write (X)Write (X)Read ( X )Write (X)O a. 13>12> TIO b. 12>TI>3OC. 12>13>||MAC d. TI>12>13

Consider the following schedule for transactions T1, T2 and T3: Which one of the schedules below is the correct serialization of the belov T1 T2 T3 Read (X) Read (Y) Read ( Y) Write (Y) Write (X) Write (X)

Consider the following schedule for transactions T1, T2 and T3: Which one of the schedules below is the correct serialization of the belov T1 T2 T3 Read (X) Read (Y) Read ( Y) Write (Y) Write (X) Write (X)

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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Concept explainers

Fundamentals of Datawarehouse

A data warehouse is a data repository which is used to store large quantities of historical data that are mostly used for creating reports that help businesses to identify their weaknesses and strengths. For example, demographics data about people of a region can help businesses identify the needs and preferences of the region’s population. A data warehouse acts as a central storage for storing data that comes from one or more heterogenous sources. It also consists of data which can be old and of historical value. One of the most important applications of this type of system is that it is used for supporting business intelligence and data analytics applications.

Question

Consider the following schedule for transactions T, T2 and T3:
Which one of the schedules below is the correct serialization of the below
T2
T3
T1
Read (X)
Read (Y)
Read ( Y)
Write (Y)
Write (X)
Write (X)
Read ( X )
Write (X)
O a. 13>12> TI
O b. 12>TI>3
OC. 12>13>||
MAC d. TI>12>13

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