Exam-style question
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What is the purpose of concurrency control in a client server database system?.
- A.To preserve the integrity of the database when clients access it at the same time
- B.To ensure that every client has a separate database
- C.To prevent the database from being accessed by the server
- D.To make all database records identical
Model answer
What a good answer should say
- To preserve the integrity of the database when clients access it at the same time.
Explanation
Why this works
Concurrency control manages simultaneous access so that conflicting changes, such as lost updates, do not damage the integrity of the database.
Common mistake
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