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A DBMS is a ____ user if at most one user can use the system and is mostly restricted to personal computer systems.
 

  • A.None
  • B.Multi
  • C.Single
  • D.Concurrent

Answer: C

Correct answer: Single

A single-user system allows at most one user at a time, which is why concurrency control is unnecessary in it. Multi-user systems must handle simultaneous access, which is where locking and transactions become essential.

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