a = 100, b = 50Identify what problems occur in the table above and provide solutionsusing 2PL. Time T1T2T1Begin_transactionT2Begin_transaction Avg = 0Read(b)T4 b = b-10T3Read (a)Read (b)T5Write (b)T6commitT7Avg = (a+b)/2%3DT8Commit

Answered: Image /qna-images/answer/92a86251-dd6a-4f23-b0b9-4e66082a263d.jpg

Answered: Time T1 T2 T1 Begin_transaction…

Time T1 T2 T1 Begin_transaction Begin_transaction Avg = 0 T2 тз | Read(b) T3 Read (a) T4 b = b-10 Read (b) T5 Write (b) Т commit T7 Avg = (a+b)/2 T8 Commit

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

Types of database architectures

A Database Architecture represents the Database Management System’s (DBMS) design (schema). The DBMS architecture makes it easy to understand the components involved in the database system and their relations. The DBMS architecture may vary based on the system on which it runs. Some systems contain both client and server machines whereas some run only on a server machine. Based on the architecture, the system can be classified as centralized, decentralized, or hierarchical.

Question

a = 100, b = 50

Identify what problems occur in the table above and provide solutions
using 2PL.

Time T1
T2
T1
Begin_transaction
T2
Begin_transaction Avg = 0
Read(b)
T4 b = b-10
T3
Read (a)
Read (b)
T5
Write (b)
T6
commit
T7
Avg = (a+b)/2
%3D
T8
Commit

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