What Is a Rule That Applies to the Two-Phase Locking

question 20

Multiple Choice

What is a rule that applies to the two-phase locking protocol?

• A)Two transactions cannot have conflicting locks.
• B)No unlock operation can precede a lock operation in a different transaction.
• C)No data is affected until all locks are released.
• D)No data is affected until the transaction is in its locked position.

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Definitions:

Inside Diameter

The distance measured across the interior of a circular object or hole, important in manufacturing and engineering for fitting components.

Forging Process

The forging process involves shaping metal through compressive forces, often using a hammer or press, to achieve desired mechanical properties and shapes.

Groove Width

The measurement of the width of a groove, often specific to contexts such as manufacturing, materials engineering, or vinyl records.

3-Sigma

A statistical term that refers to three standard deviations away from the mean of a normal distribution, covering 99.7% of all values.