logical access level 中文意思是什麼
logical access level
解釋
邏輯存取層-
According to these work, we design and develop database grid prototype system called griddaen - dai. it adopts java mechanism and integrates database resources in internet, provides uniform logical data views and data access service for grid user at different places. this system mainly adopts multi - domain server mechanism and server - registration mechanism, provides uniform access to many heterogeneous database resources, and has features such as dynamic configuration and scalability. the system is composed of metadata information service ( mis ), data access service ( das ), clients and the low - level distributed heterogeneous database resources
Griddaen - dai利用java平臺無關特性,整合廣域環境下分佈異構的數據庫資源為地理上分佈的用戶提供了全局的邏輯數據視圖和統一的數據訪問服務;系統採用分佈、獨立的多域服務器技術和服務器注冊機制,支持對多種異構數據庫資源的統一訪問,具有動態配置和可擴展性等特徵,系統在邏輯結構上主要有元服務、數據訪問服務、客戶端和底層分佈異構的數據庫資源等部分組成。
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