- 并行數(shù)據(jù)庫系統(tǒng)
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parallel database system中文什么意思
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- Distributed and parallel database system ( dpdbs ) is the joint of distributed computing , parallel process , and network technology . it is not only powerful at distributed data management , but also has well performance in parallel processing
分布式并行數(shù)據(jù)庫系統(tǒng)( distributedandparalleldatabasesystem ，簡稱dpdbs )是分布式計算、并行處理以及網(wǎng)絡(luò)技術(shù)相結(jié)合的產(chǎn)物，其不但對分散數(shù)據(jù)具有較強的管理能力，同時具有良好的性能。 - Lock mechanism of that concurrency control can effectively void the dead - lock , two phase commit can guarantee atomicity of the distribute transaction while distributed transaction is executed with which the consistency of the database system is guaranteed . the method of checking the inconsistent is mainly to track the update status of multiple repetitions when distributed and parallel database system is not busy , and to detect inconsistent early . consequently , system can be recovered to best status
數(shù)據(jù)庫在執(zhí)行分布式事務(wù)的時候,并發(fā)控制的鎖機制可有效的預(yù)防分布式事務(wù)中的死鎖現(xiàn)象,兩階段的提交協(xié)議可以保證分布式事務(wù)執(zhí)行的原子性,從而有效地保證了分布式并行數(shù)據(jù)庫系統(tǒng)的一致性,不一致性檢測的方法主要是在保證系統(tǒng)非繁忙狀態(tài)下對多個副本間的數(shù)據(jù)庫的更新狀態(tài)進行跟蹤,也保證了數(shù)據(jù)庫多個副本間不一致狀態(tài)的及早發(fā)現(xiàn),從而使系統(tǒng)及時地恢復(fù)到最佳運行狀態(tài),提高了分布式并行數(shù)據(jù)庫系統(tǒng)的可用性。
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