EPACK DATABASE SYSTEMS WITH LOOSELEAF
13th Edition
ISBN: 9780357475171
Author: Coronel
Publisher: CENGAGE L
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Expert Solution & Answer
Chapter 10, Problem 13RQ
Explanation of Solution
Deadlock:
Deadlock is the process in which two or more transactions wait infinitely for the other transaction that release the locked data item. Consider the following example:
Example:
- Transaction “T1” wants to access data items “X” and “Y” and transaction “T2” wants to access data items “Y” and “X”.
- If the transaction “T1” locks the data item “Y”, the transaction “T2” cannot starts its process.
- If the transaction “T2” locks the data item “X”, the transaction “T1” cannot continue its process.
The transaction waits for each other to unlock the data item. It is otherwise called as “deadly embrace”.
To avoid the deadlock in transactions, use the strategies of deadlock avoidance, deadlock prevention and deadlock detection.
Deadlock avoidance:
Deadlock avoidance is the process that obtains all the locks before the transaction executed. This process used to increase the response time of the transaction...
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Students have asked these similar questions
(c) Consider the following set of processes:
Process ID
Arrival Time Priority
Burst Time
A
2
3
100
B
6
C
10
1 (highest)
2
40
80
D
16
4 (lowest)
20
(3c) In the following resource allocation graph, is the state a deadlocked one? If so
which ones are deadlocked? (3 points)
Resource allocation graph. R₁ = Resource, P = process.
R1
R3
R3
7
What resources are used when a thread is created? How do these differ from those used when a process is created?
Chapter 10 Solutions
EPACK DATABASE SYSTEMS WITH LOOSELEAF
Ch. 10 - Prob. 1RQCh. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Prob. 4RQCh. 10 - Prob. 5RQCh. 10 - Prob. 6RQCh. 10 - Prob. 7RQCh. 10 - Prob. 8RQCh. 10 - Prob. 9RQCh. 10 - Prob. 10RQ
Ch. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - Prob. 13RQCh. 10 - Prob. 14RQCh. 10 - Prob. 15RQCh. 10 - Prob. 16RQCh. 10 - Prob. 17RQCh. 10 - Prob. 1PCh. 10 - Prob. 2PCh. 10 - Prob. 3PCh. 10 - Prob. 4PCh. 10 - Prob. 5PCh. 10 - Prob. 6PCh. 10 - Prob. 7PCh. 10 - Prob. 8PCh. 10 - Prob. 9PCh. 10 - Prob. 10PCh. 10 - Prob. 11P
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