[Q.4] Answer the following questions (a) Explain save point in the context of transaction management (b) Explain temporary update problem based on the following transaction schedule T2 read_item(X); X:=X- N; write_item(X); Time read_item(X); X:=X+ M; write_item(X); read_item(Y); (c) Briefly explain serializable schedule S of n concurrent transactions. (d) Show whether the following schedule is conflict serializable or not Transaction (Tı): |begin Transaction (T2): begin Read_item (X); X=X-N; Read_item(X); X=X+M; Write_item(X); Read item(Y); Write_item(X); Y:= Y+N; Write_item(Y)
[Q.4] Answer the following questions (a) Explain save point in the context of transaction management (b) Explain temporary update problem based on the following transaction schedule T2 read_item(X); X:=X- N; write_item(X); Time read_item(X); X:=X+ M; write_item(X); read_item(Y); (c) Briefly explain serializable schedule S of n concurrent transactions. (d) Show whether the following schedule is conflict serializable or not Transaction (Tı): |begin Transaction (T2): begin Read_item (X); X=X-N; Read_item(X); X=X+M; Write_item(X); Read item(Y); Write_item(X); Y:= Y+N; Write_item(Y)
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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I'm aware of Bartleby's Policy so please take notice this is one question with different parts so please answer everything. Also please no hand written answers anything that might need to be hand written please just type it.
![[Q.4] Answer the following questions
(a) Explain save point in the context of transaction management
(b) Explain temporary update problem based on the following transaction schedule
T2
read_item(X);
X:=X- N;
write_item(X);
Time
read_item(X);
X:=X+ M;
write_item(X);
read_item(Y);
(c) Briefly explain serializable schedule S of n concurrent transactions.
(d) Show whether the following schedule is conflict serializable or not
Transaction (T1):
begin
Transaction (T2):
begin
Read item (X);
X = X-N;
Read item(X);
X=X + M;
Write item(X);
Read item(Y);
Write_item(X):
Y:= Y+N;
Write_item(Y).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F849fd6bc-3c5d-4d90-8feb-79c323732774%2Fd87b4fad-e276-417f-aab9-56db4fa3d45f%2Fx7cnqks_processed.png&w=3840&q=75)
Transcribed Image Text:[Q.4] Answer the following questions
(a) Explain save point in the context of transaction management
(b) Explain temporary update problem based on the following transaction schedule
T2
read_item(X);
X:=X- N;
write_item(X);
Time
read_item(X);
X:=X+ M;
write_item(X);
read_item(Y);
(c) Briefly explain serializable schedule S of n concurrent transactions.
(d) Show whether the following schedule is conflict serializable or not
Transaction (T1):
begin
Transaction (T2):
begin
Read item (X);
X = X-N;
Read item(X);
X=X + M;
Write item(X);
Read item(Y);
Write_item(X):
Y:= Y+N;
Write_item(Y).
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