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:

Soluble

Capable of being dissolved in a solvent, typically referring to the ability of a substance to dissolve in water.

Diffusion

Diffusion is the passive movement of particles from an area of high concentration to an area of low concentration until equilibrium is reached.

Tidal Volume

The volume of air inhaled or exhaled during a normal breathing cycle, without exertion.

Expiratory Reserve Volume

Maximum volume of air that can be expelled from the lungs after a normal expiration.