Oracle
1Z0-873 · Question #35
1Z0-873 Question #35: Real Exam Question with Answer & Explanation
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Question
Which of the following correctly defines dirty reads, non-repeatable reads and phantom row?
Options
- AA dirty read is a read by one transaction of uncommitted changes made by another transaction.
- BA dirty read is a read by one transaction of its uncommitted changes.
- CA non-repeatable read occurs when a transaction performs the same retrieval twice but gets a
- DA non-repeatable read is a row that appears where it was not visible before.
- EA phantom is a row that appears where it was not visible before.
- FA phantom is a read by one transaction of uncommitted changes made by another transaction.
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