2PL (1) 썸네일형 리스트형 [DB] 동시성 제어 Concurrency Control Techniques Concurrency Control Protocols : guarantee serializability (직렬화 보장) Locking Timestamps multiversion CC protocols Optimistic protocols Multiple granularity concurrency control protocol Two-phase Locking Techniques : 이중 라킹 lock 상태 1, unlock 상태는 0 Lock table : lock 정보를 관리하는 서브시스템 plus a queue for transactions that are waiting to access item Shared/Exclusive (or Read/Wr.. 이전 1 다음
