update transaction 中文意思是什麼
update transaction
解釋
更新事項處理- update : vt. 〈美國〉（通過修訂、增補）使（書等）成為最新式的[現代化的]，使（書等）與（當前條件）相適應。n. 【自動化】（供電子計算機使用的）最新情報。
- transaction : n 1 辦理，處理；交易；業務，事務。2 【法律】和解。3 〈pl 〉（學會等的）會議記錄；學報。4 【心理學...
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A distributed transaction will be started to guarantee atomicity across all nodes affected by the update
將啟動分散式事務以確保更新所影響的所有節點間的原子性。 -
If two transactions acquire shared - mode locks on a resource and then attempt to update data concurrently, one transaction attempts the lock conversion to an exclusive lock
如果兩個事務獲得了資源上的共享模式鎖，然後試圖同時更新數據，則一個事務嘗試將鎖轉換為排他鎖（ x鎖） 。 -
Every update then becomes its own transaction
每次更新將變為讀取器自己的事務。 -
You may also want to update several tables at once, in which case you may want to use a transaction
您或許還想立即更新多個表，因而可能要使用事務。 -
This paper decomposes materialized views maintenance into ods / db interface and dw / ods interface. multiple data sources with concurrent updates may result in update anomalies of the materialized views. so at ods / db interface this paper introduces an improved nested transaction model - based transaction concurrency control mechanism to maintenance views in ods on line
本文把視圖的一致性維護問題分解到三層結構的ods / dw和dw / ods兩個介面上分別實現，並且引入視圖生成樹的概念，在ods / db介面處採用基於改進嵌套事務模型的並發控制機制，聯機維護ods的數據，大大提高了視圖維護過程中的並發度和靈活性。 -
Upon failure, the application needs to be able to recover with the transaction manager to determine the final outcome of the transaction, so that it can update permanent data
在失敗時，應用程序需要能夠通過事務管理器恢復，以確定事務的最終結果，以便可以更新永久數據。 -
In the optimization of update transaction, we added a function to the read operation of active transaction to check whether there existed an uncommited data version
在對更新事務的優化中，將更新事務細分為普通事務和主動事務。對主動事務的讀操作加入了檢測是否存在未提交數據版本的函數。 -
If the update failed and the transaction rolled back, another message could be sent to the jms provider on a separate destination, describing the reason for the failed transaction
如果更新操作失敗並且事務回滾（ rollback ） ，則再發送一條消息到一個單獨的目的地上的jms提供者那裡，同時給出對事務失敗的原因的描述。 -
Optionally, update the primary server with transaction log backups from the secondary server
也可以使用輔助服務器的事務日誌備份更新主服務器。 -
Deferred global view maintenance can speed up the update transactions by shifting maintenance into a deferred transaction, but even strict two phase locking ( 2pl ) can not guarantee the serializable execution of transactions in this case. this paper develops a serializabitity theory base upon conflicts and serialization graphs in presence of deferred global view maintenance
由於延遲視圖維護機制允許修改事務在全局視圖沒有進行相應的改動之前提交，有暫時的數據不一致情況出現，在這種情況下，即使嚴格的zpl協議也不能保證全局事務的可串列化執行。 -
Update statistics is not allowed in an explicit or implicit transaction
不允許在顯式或隱式事務中使用update statistics 。 -
On - line update how many ilf ' s are updated by on - line transaction
在線更新多少ilf被在線事務所更新？ -
On - line update ? how many ilf ' s are updated by on - line transaction
在線更新?多少ilf被在線事務所更新？ -
A resource manager, for instance db2, detects that it is not asked to update the shared data in this transaction branch
資源管理程序，例如db2 ，探測到它沒有被要求更新這個事務分支中的共享數據。 -
Monitors the ratio of update snapshot transaction that have update conflicts to the total number of update snapshot transactions
監視存在更新沖突的更新快照事務與更新快照事務總數的比值。 -
Only one transaction can obtain an update lock to a resource at a time
一次只有一個事務可以獲得資源的更新鎖（ u鎖） 。 -
Specifies that update locks are to be taken and held until the transaction completes
指定採用更新鎖並保持到事務完成。 -
If a transaction modifies a resource, the update lock is converted to an exclusive lock
如果事務修改資源，則更新鎖（ u鎖）轉換為排他鎖（ x鎖） 。 -
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
數據庫在執行分散式事務的時候，並發控制的鎖機制可有效的預防分散式事務中的死鎖現象，兩階段的提交協議可以保證分散式事務執行的原子性，從而有效地保證了分散式并行數據庫系統的一致性，不一致性檢測的方法主要是在保證系統非繁忙狀態下對多個副本間的數據庫的更新狀態進行跟蹤，也保證了數據庫多個副本間不一致狀態的及早發現，從而使系統及時地恢復到最佳運行狀態，提高了分散式并行數據庫系統的可用性。 -
The model optimized the read - only transaction and the update transaction separately
文中分別對只讀事務和更新事務進行了優化。
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