Consider the following table as a snapshot of resources in a system: A (10 instances), B (5 instances), and C (7 instances). a) Write down the calculation steps to find a Safe/Unsafe state: b) Is this system in a safe state? If so, write the safe sequence.

Consider the following table as a snapshot of resources in a system: A (10 instances), B (5 instances), and C (7 instances). a) Write down the calculation steps to find a Safe/Unsafe state: b) Is this system in a safe state? If so, write the safe sequence.

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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Question

Consider the following table as a snapshot of resources in a system:
A (10 instances), B (5 instances), and C (7 instances).
a) Write down the calculation steps to find a Safe/Unsafe state:
b) Is this system in a safe state? If so, write the safe sequence.
Allocation
Max Available
АВС
АВС
332
Po
P1
P2
P3
PA
010
753
200
322
302
902
211
222
002
433

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Explain why deep access is preferable to shallow access from the standpoint of a programmer; avoid making a case only on the basis of performance considerations.
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