“data federation tool”的概念、定义、翻译、参考文献-科学参考

单词	data federation tool
释义	data federation tool Encyclopedia 理学数据库中间件释 data federation tool数据联邦工具通过包装器隐藏每个异构数据源自身特性，为异构数据源提供抽象的数据接口，可看作是一个虚拟的联邦数据库，或具有数据库管理系统（DBMS）功能的中间件软件，应用包装器访问异构数据源。
随便看	observation of developmental stages of trees observation of ground pressure observation of livestock growth and development observation of navigation obstruction observation of reservoir sediment observation of seismic response of structures observation of slope stability observation of surrounding rock structure observation platform observation point control observation process observation route control observation scheme observation technology of gravity tide observation technology of strain tide observation, thinking and experiments observation vector observation window Observatoire de Paris Observatoire de Paris，PSL/Paris Observatory Observatoire Royal de Belgique Observatoire Virtuel France Observatorio del Roque de los Muchachos Observatorio del Teide Observatory

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