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-. In a distributed database system, account A is stored in database A at location A and account B is stored in database B at location B. Transaction 1 transfers $100 from account A to account B and transaction 2 transfers $50 from account B to account A. Transaction B starts first, but before it completes, transaction A starts. A 2 Phase Locking (2PL) protocol is used. Can deadlock occur? Use wait-for-graphs to justify your answer. Explain in detail.

-. In a distributed database system, account A is stored in database A at location A and account B is stored in database B at location B. Transaction 1 transfers $100 from account A to account B and transaction 2 transfers $50 from account B to account A. Transaction B starts first, but before it completes, transaction A starts. A 2 Phase Locking (2PL) protocol is used. Can deadlock occur? Use wait-for-graphs to justify your answer. Explain in detail.

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
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4. In a distributed database system, account A is stored in database A at location A and account B is stored in database B at location B. Transaction 1 transfers $100 from account A to account B and transaction 2 transfers $50 from account B to account A. Transaction B starts first, but before it completes, transaction A starts. A 2 Phase Locking (2PL) protocol is used. Can deadlock occur? Use wait-for-graphs to justify your answer. Explain in detail.
Transcribed Image Text:4. In a distributed database system, account A is stored in database A at location A and account B is stored in database B at location B. Transaction 1 transfers $100 from account A to account B and transaction 2 transfers $50 from account B to account A. Transaction B starts first, but before it completes, transaction A starts. A 2 Phase Locking (2PL) protocol is used. Can deadlock occur? Use wait-for-graphs to justify your answer. Explain in detail.
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