What Concurrent Processing Problem Occurs When a Transaction Reads a Changed

question 25

Multiple Choice

What concurrent processing problem occurs when a transaction reads a changed record that has not been committed to the database?

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

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Definitions:

Risk Aversion

The preference to avoid uncertainty and potential financial loss.

Holding-period Return

The total return received from holding an asset or portfolio of assets over a period of time, considering both income and capital gains.

Risk Aversion

The behavior exhibited by investors who prefer lower risk investments, often at the expense of sacrificing some potential returns.

Expected Return

The anticipated average return on an investment, factoring in the probabilities of each potential outcome.