mirror database 中文意思是什麼

mirror database 解釋
鏡像數據庫
  • mirror : n. 1. 鏡；反射鏡。2. 反映；借鑒；榜樣。vt. 映，反射；反映。
  1. Mobile agent, which originates from distributed - system research area and indicates the future of internet, is the result of gradually developed distributed - system technology. nevertheless, as a new concept, the mobile agent is probed both home and abroad. hence. there ' s neither regular model nor detailed description of agent. taking it for granted, this essy aims at the availiblity of mobile agent on the base of the mobility and autonomy of it. this essy then describes the " agent - based and fully materialized virtual database in the electronical book market system ", in which the author plays an importmant role. as regard to this sysetm, a uniform mirror database ( book market ) of all sourcedatabases is established and, with the help of the mobile agent, it ensures more instant access to diversified book information the customer needed. when some data is changed in the source termiante, the mobile agent then carries modification informations and moves from the source terminate to the mirror terminate, and, by doing relevant operations, the diferrent databases in different ends then become consistent

    本文描述了筆者參與開發的一個系統： 「基於移動agent的全具象vdb電子書市系統」 。本系統以移動agent為基礎，通過建立對各個數據源（書店）數據庫的一個總的鏡像數據庫（書市）來實現客戶數據查詢的即時性和快速性。每個源端數據庫一經修改，由移動agent攜帶相關修改信息移動到鏡像端對數據庫進行相應操作，從而保證源端數據庫與鏡像端數據庫的一致。
  2. If any log is waiting in the redo queue, the mirror server finishes rolling forward the mirror database

    如果重做隊列中有任何等待的日誌，則鏡像服務器將完成前滾鏡像數據庫的操作。
  3. Preparing a mirror database to restart mirroring

    為重新啟動鏡像準備鏡像數據庫
  4. Jobs on the mirror database fail because it is in the restoring state and so it is unavailable

    鏡像數據庫上的作業失敗，因為它處于正在還原狀態，所以不可用。
  5. Forces database service to the mirror database after the principal server fails with the database in an unsynchronized state or in a synchronized state when automatic failover does not occur

    在主體服務器因數據庫處于不同步狀態而失敗后，強制鏡像數據庫提供服務。
  6. In the presence of a third server, the witness server, if the principal database becomes unavailable, the principal role can automatically fail over to the mirror database

    在存在第三臺服務器（證據）的情況下，如果主體數據庫不可用，主體角色可以自動故障轉移到鏡像數據庫。
  7. To achieve synchronous operation for a session, the mirror server must synchronize the mirror database with the principal database

    若要實現會話的同步操作，鏡像服務器必須將鏡像數據庫與主體數據庫同步。
  8. On the loss of the principal server, the mirror database is marked disconnected but is available as a warm standby

    在丟失主體服務器的情況下，鏡像數據庫將標記為disconnected ，但仍可以作為熱備用使用。
  9. You can use a copied database for many purposes, including testing, checking consistency, developing software, running reports, creating a mirror database, or, possibly, to make the database available to remote - branch operations

    您可以將復制的數據庫用於許多用途，包括測試、檢查一致性、開發軟體、運行報表、創建鏡像數據庫或將數據庫用於遠程分支操作（如果可能） 。
  10. Forcing service initiates a smooth transition of the principal role to the mirror database

    本主題假定您熟悉數據庫鏡像的高性能運行模式和高級別保護運行模式。
  11. Database mirroring in sql server 2005 increases database availability by allowing you to maintain a hot standby server that contains a copy, or mirror database, of the production database, called the

    Sql server 2005中的數據庫鏡像通過允許維護熱備用服務器（其中包含稱為主體數據庫的生產數據庫的副本或鏡像數據庫） ，可以提高數據庫的可用性。
  12. The time required for synchronization depends essentially on how far the mirror database was behind the principal database at the start of the session measured by the number of log records initially received from the principal server, the work load on the principal database, and the speed of the mirror system

    同步所需的時間實質上取決于會話開始時鏡像數據庫滯後於主體數據庫的時間（按最初從主體服務器收到的日誌記錄數計量） 、主體數據庫的工作負荷和鏡像系統的速度。
  13. The mirror database must be in the restoring state for mirroring to work

    為使鏡像正常運行，鏡像數據庫必須處于restoring狀態。
  14. The mirror database is in the restoring state, which prevents the backup jobs from backing up the log on the mirror database

    鏡像數據庫處于還原狀態，這樣可以防止備份作業備份鏡像數據庫中的日誌。
  15. Database mirroring can be used to maintain a single standby database, or mirror database, for a corresponding production database that is referred to as the

    . ）不要在生產環境中使用數據庫鏡像， microsoft支持服務不支持使用數據庫鏡像的數據庫或應用程序。
  16. Therefore, trustworthy is always off on a new mirror database

    因此，在新的鏡像數據庫中， trustworthy始終為off 。
  17. Therefore, on a new mirror database trustworthy is always off

    因此，在新的鏡像數據庫中， trustworthy始終為off 。
  18. Redoing the log involves applying the queued log records to the mirror database in sequence, starting with the oldest record

    」日誌記錄。重做日誌涉及從最早的記錄開始，將排隊的日誌記錄按順序應用到鏡像數據庫的操作。
  19. If the principal server fails, the mirror server can rapidly switch the mirror database to the role of principal database

    如果主體服務器失敗，則鏡像服務器可以迅速將鏡像數據庫切換到主體數據庫的角色。
  20. Causing the mirror database to be disconnected

    上的鏡像數據庫斷開連接。在
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