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A _____ is a logical unit of database processing that includes one or more data access operations that can include insertion, deletion, modification or retrieval operations.

  • A.Database
  • B.Data
  • C.Transaction
  • D.Record

Answer: C

Correct answer: Transaction

A transaction is the unit of database processing: a group of operations that must all take effect or none, so that the database moves from one consistent state to another. That is what makes it the unit for recovery and concurrency control.

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