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:

Permeability

Permeability refers to the ability of a material or membrane to allow liquids or gases to pass through it.

Sodium-Potassium Pump

The sodium-potassium pump is a membrane-bound enzyme critical for cellular function, actively transporting sodium out of and potassium into cells, helping maintain cellular electrochemical gradients.

Action Potential

An action potential is a rapid electrical impulse that travels along the membrane of a neuron or muscle cell, facilitating communication and response.

Plasma Membrane

A two-layer lipid membrane that surrounds the cytoplasm within a cell, governing how substances move in and out.