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Questions and Answers
Which of the following best describes a transaction in computer terminology?
Which of the following best describes a transaction in computer terminology?
- A method for restoring the database operation sequence from a failure
- A sequence of read/write operations on the database
- A series of operations for accessing or updating data in the system (correct)
- Isolation between programs accessing a database
Which of the following is the main purpose of transactions in a database environment?
Which of the following is the main purpose of transactions in a database environment?
- To ensure atomicity of transactions
- To ensure consistency of the database
- To provide isolation between programs accessing a database concurrently (correct)
- To provide a method for restoring the database operation sequence from a failure
Which of the following states can a transaction be in at any time?
Which of the following states can a transaction be in at any time?
- Active, committed, and completed
- Active, committed, and terminated
- Active, committed, and failed (correct)
- Active, committed, and aborted
Which of the following is the meaning of atomicity in a transaction?
Which of the following is the meaning of atomicity in a transaction?
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What is the purpose of providing isolation between programs accessing a database concurrently?
What is the purpose of providing isolation between programs accessing a database concurrently?
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