(Answered) Distributed database conceptsnbsp1 compare the primary site

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DISTRIBUTED DATABASE CONCEPTS

1. Compare the primary site method with the primary copy method for distributed concurrency control. How does the use of backup sites affect each?

2. When are voting and elections used in distributed databases?

3. Discuss briefly online directories, their management, and their role in distributed databases

INTRODUCTION TO NOSQL SYSTEMS

1. Discuss how replication and sharding are done in MongoDB

2. Discuss the data modeling concepts in DynamoDB.

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