What Concurrent Processing Problem Occurs When a Transaction Rereads Data

question 5

Multiple Choice

What concurrent processing problem occurs when a transaction rereads data and finds new rows that were inserted by a different transaction since the prior read?

• A) Nonrepeatable reads
• B) Phantom reads
• C) Dirty reads
• D) Serialized reads
• E) Unlocked reads

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Definitions:

Unilateral Contract

A contract where one party makes a promise in exchange for the performance of a specified act by the other party, who is not obligated to perform.

Quasi Contract

An obligation imposed by law to prevent unjust enrichment, where no actual contract exists.

Uniform Commercial Code

A comprehensive set of laws governing commercial transactions in the United States, intended to harmonize the law among the states.

Article 2

A section of the UCC that governs the sale of goods, establishing standards and regulations for contracts and transactions.