All sub parts please Q1. Consider a system with 4 processes Po through P3. 3 resource types A. B. and C. and thecurrent state at t as shown in Table 2. Hint: Safety algorithm and Resource-requestalgorithm in Appendix I.Table 2: Process allocationMaxProcessAvailableA B сB CB сPo00100 1P₁175100P:2 35135P:65063Total29915 2How many resources are there of type (A. B. C)?What is the contents of the Need matrix?iii)Is the system in a safe state? Why?iv)If a request from process P1 arrives for additional resources of (0. 5. 2). can theBanker's algorithm grant the request immediately?What would be the new system state after the allocation (Table 3)?Table 3: Process allocationMaxAllocationAvailableProcessBс A BCA B сPo01P17 5P₂3 5P:5Total1)012Allocation

Solution i) Type A has 3 resources because (2+1)=3 Type B has 14 resources because (9+5)=14 Type C…

i) How many resources are there of type (A. B. C)? What is the contents of the Need marix? iii) Is the system in a safe state? Why? iv) If a request from process P1 arrives for additional resources of (0. 5. 2). can the Banker's algorithm grant the request immediately? v) What would be the new system state after the allocation (Table 3)?

i) How many resources are there of type (A. B. C)? What is the contents of the Need marix? iii) Is the system in a safe state? Why? iv) If a request from process P1 arrives for additional resources of (0. 5. 2). can the Banker's algorithm grant the request immediately? v) What would be the new system state after the allocation (Table 3)?

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

Concurrency Control

The simultaneous occurrence of two or more operations is called concurrence and the situation is called concurrency. In concurrency, the function of one operation can affect the function of the other and put data integrity at risk. Hence, management for the control of concurrency is required. The management or controlling system in the Database Management System (DBMS) that coordinates concurrent access is called the concurrency control system.

Question

All sub parts please

Q1. Consider a system with 4 processes Po through P3. 3 resource types A. B. and C. and the
current state at t as shown in Table 2. Hint: Safety algorithm and Resource-request
algorithm in Appendix I.
Table 2: Process allocation
Max
Process
Available
A B с
B C
B с
Po
0
0
1
0
0 1
P₁
1
7
5
1
0
0
P:
2 3
5
1
3
5
P:
6
5
0
6
3
Total
2
9
9
1
5 2
How many resources are there of type (A. B. C)?
What is the contents of the Need matrix?
iii)
Is the system in a safe state? Why?
iv)
If a request from process P1 arrives for additional resources of (0. 5. 2). can the
Banker's algorithm grant the request immediately?
What would be the new system state after the allocation (Table 3)?
Table 3: Process allocation
Max
Allocation
Available
Process
B
с A BC
A B с
Po
0
1
P1
7 5
P₂
3 5
P:
5
Total
1)
0
1
2
Allocation

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