serializability 中文意思是什麼

serializability 解釋
可串列化
  1. Serializability may not be implemented using only row - level locks ; there must be another mechanism that prevents a newly inserted row from becoming visible to a transaction that has already executed a query that would return the row

    如果僅僅通過「行級鎖」是無法實現事務序列化的,必須通過其他機制保證新插入的數據不會被剛執行查詢操作的事務訪問到。
  2. This is referred to as serializability because it results in the ability to reload the starting data and replay a series of transactions to end up with the data in the same state it was in after the original transactions were performed

    這稱為可串列性,因為它能夠重新裝載起始數據,並且重播一系列事務,以使數據結束時的狀態與原始事務執行的狀態相同。
  3. Is a schema stability sch - s lock. in this case, serializability is no longer guaranteed

    唯一採用的鎖是架構穩定性鎖( sch - s鎖) 。
  4. But at present, there seem to be much deficiencies on the correctness and reliability of workflow and it can not meet the practical needs very well. in this paper, we introduce some transactional properties to workflow and put forward a nested workflow model with transactional characteristics. this model includes nested tasks and dependencies between the tasks, and it is provided with some atm properties such as relaxed isolation and atomicity. further more, we discuss the execution mechanism, system recovery and error handling of workflow on the base of the transactional characteristics. by defining consistency unit and execution atomic unit, we loosen the failure atomicity, serializability of concurrent worflow and isolation between tasks, thus, workflow meets the needs of the application semantics more flexiblly with high correctness and reliability

    這個模型包含嵌套任務和任務間的依賴,並具有高級事務模型的一些屬性,比如鬆散的隔離性和原子性。我們又進一步在這個模型的基礎上利用這些事務性質提出了有關工作流的執行機制、系統恢復和錯誤處理等問題的解決方法。通過定義一致性單元和執行單元放鬆了事務的失敗原子性、並發工作流的可串列化要求以及任務間的隔離性,使工作流在具有高可靠性和正確性的前提下更靈活地滿足實際應用語義的要求。
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