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.

---

Definitions:

Intrauterine Device (IUD)

A small, T-shaped device inserted into the uterus by a healthcare provider as a method of long-term contraception.

Uterus

An organ in the female reproductive system where embryonic and fetal development occurs.

Diaphragm Users

Individuals who use a diaphragm, a form of birth control that is placed inside the vagina to cover the cervix and prevent pregnancy.

Contraceptive Foams

A form of birth control that is inserted into the vagina before intercourse to prevent sperm from reaching an egg.