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What is the purpose of concurrency control? What is throughput, and how is concurrency control related to throughput? Q2. Explain the difference between an exclusive

What is the purpose of concurrency control? What is throughput, and how is concurrency control related to throughput?

Q2. Explain the difference between an exclusive lock and a shared lock.

Q3. Explain the meaning of the expression ACID transaction.

Q4. Explain how rollback database recovery and rollforward database recovery work.

Q5. Explain the difference between database partition and database replication.

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