A FEDERATED ARCHITECTURE FOR INFORMATION MANAGEMENT
A FEDERATED ARCHITECTURE FOR INFORMATION MANAGEMENT
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DOI：
10.1145/4229.4233
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发表时间：
1985-01-01
期刊：
影响因子：
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通讯作者：
MCLEOD, D
中科院分区：
文献类型：
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作者：
HEIMBIGNER, D;MCLEOD, D
描述了一种计算机信息协调共享和交换的方法，强调自治数据库之间的局部、受控共享。办公室信息系统为这种类型的信息共享和交换提供了特别适当的环境。本文描述了一种联邦数据库体系结构，在这种体系结构中，一组独立的数据库系统被联合成一个松散耦合的联邦，以便共享和交换信息。联邦由组件（可以有任意数量的组件）和单个联邦字典组成。这些组件代表办公信息系统中的个人用户、应用程序、工作站或其他组件。联邦字典是一个专门的组件，它维护联邦的拓扑结构并监督新组件的条目。联合中的每个组件通过导出模式和导入模式来控制与其他组件的交互。导出模式指定组件将与其他组件共享的信息，而导入模式指定组件希望操作的非本地信息。联邦体系结构提供了共享数据、共享事务（通过消息类型）、组合来自多个组件的信息以及在自治组件之间协调活动（通过协商）的机制。联邦数据库机制的原型实现目前在实验基础上运行。
An approach to the coordinated sharing and interchange of computerized information is described emphasizing partial, controlled sharing among autonomous databases. Office information systems provide a particularly appropriate context for this type of information sharing and exchange. A federated database architecture is described in which a collection of independent database systems are united into a loosely coupled federation in order to share and exchange information. A federation consists of components (of which there may be any number) and a single federal dictionary. The components represent individual users, applications, workstations, or other components in an office information system. The federal dictionary is a specialized component that maintains the topology of the federation and oversees the entry of new components. Each component in the federation controls its interactions with other components by means of an export schema and an import schema. The export schema specifies the information that a component will share with other components, while the import schema specifies the nonlocal information that a component wishes to manipulate. The federated architecture provides mechanisms for sharing data, for sharing transactions (via message types) for combining information from several components, and for coordinating activities among autonomous components (via negotiation). A prototype implementation of the federated database mechanism is currently operational on an experimental basis.