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Illustrate the important issues for the evaluation of Online Transaction Processing (OLTP) and the critical features of OLTP systems.



Important Issues:

1- Unscheduled Downtime.

2- Concurrency Challenges.

3- Atomicity.

4- Financial Transaction Processing Costs.



Critical Features:

1- Operational Processing.

2- Customer-oriented used for transaction.

3- Entity-relationship data model and an application-oriented database design.

4- Focuses on day-to-day data.

5- The access patterns is short, simple transactions.

6- High performance, high availability.

7- Transaction throughput.