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

List 3 ways people were targeted by the nazis.

Read the paragraph and answer the question that follows: the town of belmond, iowa, needs to add weather sirens. the loud and steady wail would warn citizens of approaching danger. if past history is an indication, the sirens will save hundreds of lives. with a prediction of a deadly storm season, the alert which sentence should be revised to eliminate redundancy? the town of belmond, iowa, needs to add weather sirens. the loud and steady wail would warn citizens of approaching danger. if past history is an indication, the sirens will save hundreds of lives. with a prediction of a deadly storm season, the alert system is needed immediately.

Which organelle is marked with an x?