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:

Psychiatry

A branch of medicine focused on the diagnosis, treatment, and prevention of mental, emotional, and behavioral disorders.

Opinion

An unsubstantiated belief in or conclusion about what seems to be true according to an individual’s personal thoughts.

Concrete Evidence

Concrete evidence refers to tangible, specific proof that leaves little room for doubt or questioning in the context it is presented.

Value Judgment

An assessment that reflects personal beliefs or opinions about the worth, desirability, or importance of something.