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Assume the following transection T1 and T2 executing in serial schedule. The Initial value of A=20 and B=10. Find the result of serial schedule T1 followed by T2, A=………….., B=……….. Find the result of serial schedule T2 followed by T1, A=………….., B=………..

Assume the following transection T1 and T2 executing in serial schedule. The Initial value of A=20 and B=10. Find the result of serial schedule T1 followed by T2, A=………….., B=……….. Find the result of serial schedule T2 followed by T1, A=………….., B=………..

Database System Concepts
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
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Assume the following transection T1 and T2 executing in serial schedule. The Initial value of A=20 and B=10. 

  1. Find the result of serial schedule T1 followed by T2, A=………….., B=………..
  2. Find the result of serial schedule T2 followed by T1, A=………….., B=………..

 

Ti T2 Read lock(B); Read Item(B) Unlock(B); Write lock(A); Read item(A); Read lock(4); Read Item(A) Unlock(4); Write lock(B); Read item(B); టిటిటిటిి A :=A+B; Write item(A); Unlock(A); B:=A+B; Write item(B); Unlock(B); www wwww
Transcribed Image Text:Ti T2 Read lock(B); Read Item(B) Unlock(B); Write lock(A); Read item(A); Read lock(4); Read Item(A) Unlock(4); Write lock(B); Read item(B); టిటిటిటిి A :=A+B; Write item(A); Unlock(A); B:=A+B; Write item(B); Unlock(B); www wwww
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