logical database name 中文意思是什麼
logical database name
解釋
邏輯數據庫名-
The logical file name must comply with the rules for sql server identifiers and must be unique among logical file names in the database
邏輯文件名必須符合sql server標識符規則，而且在數據庫中的邏輯文件名中必須是唯一的。 -
This paper stresses on discussing the architecture, access protocol and implementation mechanism based on xml and web services technologies, researches key technologies of metadata information service and data uniform access and management in database grid, designs and implements distributed mis subsystem and das subsystem, which support multi - domain management. mis can provides metadata information for the whole system, such as das and clients, it uses domain name 、 logical name and internal name of data object to uniformly name database resources in grid and implements name mapping mechanism and user view metadata information service and provides virtual organization and management of database resources. das can provide a scalable uniform data access by virtual organization and management of storage resources and multi - mode data share access mechanism, thus integrate database resources in grid and shields distribution and heterogeneity of resources and achieves transparent access. system adopts data access mechanism based on user request mapping to flexibly implement data access across multi domains, and adopts distributed data cache mechanism 、 security mechanism based gsi to provide high - performance secure data service for grid users
本文論述了griddaen - dai系統的邏輯結構、訪問協議、數據服務流程以及基於webservices 、 xml等技術的實現策略，重點研究數據庫網格中的元服務、數據統一訪問和管理等關鍵技術，設計和實現了支持多管理域的分散式元服務子系統和數據訪問服務子系統。其中元服務主要為整個系統提供各種元信息支持，它採用域名、數據對象的邏輯名稱、物理名稱和內部名稱對廣域環境下的數據庫數據進行了統一命名，實現了相應的名字映射機制和全局的用戶數據視圖服務，提供了數據庫資源的虛擬組織與管理方式;數據訪問服務通過提供可擴展的統一數據訪問和支持多種數據共享訪問模式，屏蔽了數據庫資源的分佈性和異構性，為用戶提供了統一透明的數據服務。 -
Replication requires a persistent logical database name
復制需要一個持久的數據庫邏輯名稱。 -
Because the logical name of the database depends on the file location, which will change with each xcopy, any code that specifies a logical database name will fail
因為數據庫的邏輯名稱取決于文件位置，該位置會在每次xcopy時發生更改，所以，任何指定數據庫邏輯名稱的代碼都無法使用。 -
If the length of the full path and file name exceeds 127 characters, the logical database name is shortened and prefixed with a guid, ensuring a unique logical name
如果完整路徑和文件名的長度超過127個字元，則需要縮短數據庫的邏輯名稱，並且加上前綴guid ，從而確保邏輯名稱的唯一性。 -
Database partition expressions are typically used when defining containers of a tablespace across multiple logical database partitions of the same machine, to avoid having the same path device name used by more than one logical partition
當定義一個橫跨同一臺機器上多個邏輯數據庫分區的表空間的容器時，為了避免一個以上的邏輯分區具有相同的路徑/設備名稱，通常使用數據庫分區表達式（ database partition expression ） 。 -
Logical name of the file in the database
數據庫中文件的邏輯名稱。
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