Answer the following questions: 1. What is a transaction? 2. Why does a DBMS interleave the actions
Question:
1. What is a transaction?
2. Why does a DBMS interleave the actions of different transactions instead of executing transactions one after the other?
3. What must a user guarantee with respect to a transaction and database consistency? What should a DBMS guarantee with respect to concurrent execution of several transactions and database consistency?
4. Explain the strict two-phase locking protocol.
5. What is the WAL property, and why is it important?
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Let us answer each question in turn 1 A transaction is any one execution of a user program in a DBMS This is the basic unit of change in a DBMS 2 A DB...View the full answer
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Sultan Ghulam Dastgir
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Related Book For 
Database management systems
ISBN: 978-0072465631
3rd edition
Authors: Raghu Ramakrishan, Johannes Gehrke, Scott Selikoff
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