What Rule Applies to the Two-Phase Locking Protocol

question 36

Multiple Choice

What rule applies to the two-phase locking protocol?

• A) Two transactions cannot have conflicting lock.
• 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:

Debts

Money, goods, or services owed by one party to another under the terms of a contract or agreement.

Garnishments

A legal process whereby a creditor can collect what a debtor owes by requiring a third party to turn over the debtor’s property or wages.

Creditors

Individuals or institutions that lend money or extend credit and are owed repayment by debtors.

Involuntary Bankruptcy

A legal proceeding initiated by creditors against a debtor who fails to pay owed amounts, forcing the debtor into bankruptcy to satisfy debts.