@prefix rdf: . @prefix dbpedia: . @prefix ns2: . dbpedia:Federated_database_system rdf:type ns2:DatabaseManagementSystems . @prefix owl: . dbpedia:Federated_database_system owl:sameAs . @prefix foaf: . @prefix ns5: . dbpedia:Federated_database_system foaf:page ns5:Federated_database_system . @prefix dbpprop: . dbpedia:Federated_database_system dbpprop:reference , , , , , , , . @prefix rdfs: . dbpedia:Federated_database_system rdfs:label "F\u00F6deriertes Informationssystem"@de , "Federated database system"@en ; dbpprop:abstract "A federated database system is a type of meta-database management system (DBMS) which transparently integrates multiple autonomous database systems into a single federated database. The constituent databases are interconnected via a computer network, and may be geographically decentralized. Since the constituent database systems remain autonomous, a federated database system is a contrastable alternative to the (sometimes daunting) task of merging together several disparate databases. A federated database (or virtual database) is the fully-integrated, logical composite of all constituent databases in a federated database system. McLeod and Heimbigner were one of the first papers to define a Federated Database Architecture define the architecture and interconnect databases that minimize central authority yet supports partial sharing and coordination among database systems Through data abstraction, federated database systems can provide a uniform front-end user interface, enabling users and clients to store and retrieve data in multiple noncontiguous databases with a single query--even if the constituent databases are heterogeneous. To this end, a federated database system must be able to decompose the query into subqueries for submission to the relevant constituent DBMS's, after which the system must composite the result sets of the subqueries. Because various database management systems employ different query languages, federated database systems can apply wrappers to the subqueries to translate them into the appropriate query languages. Note: this description of federated databases does not accurately reflect the McLeod/Heimbigner definition of a federated database. Rather, this description fits what McLeod/Heimbinger called a composite database. McLeod/Heimbigner's federated database is a collection of autonomous components that make their data available to other members of the federation through the publication of an export schema and access operations; there is no unified, central schema that encompasses the information available from the members of the federation. Among other surveys defines Federated Databases as a collection of cooperating component systems which are autonomous and are possibly heterogeneous. The three important components of an FDBS as pointed out in is autonomy, heterogeneity and distribution. Another dimension which has also been considered is the Networking Environment Computer Network, e.g. , many DBSs over a LAN or many DBSs over a WAN update related functions of participating DBSs (e.g. , no updates, nonatomic transitions, Atomic updates). Master Data Management or MDM is a relatively new term for similar practices."@en , "Ein f\u00F6deriertes Informationssystem (oft auch f\u00F6deriertes Datenbanksystem) ist ein Informationssystem, das einen Zugriff auf mehrere autonome Informationsquellen bietet, ohne dass deren Daten kopiert werden, wie es beispielsweise in einem Data Warehouse der Fall ist. Diese Form der Integration mehrerer Datenquellen, bei der diese selbst unver\u00E4ndert bleiben, wird auch als virtuelle Informationsintegration bezeichnet. \u201EF\u00F6deriert\u201C hei\u00DFt dieses System, weil es ein Zusammenschluss von einzelnen Systemen ist, die ihre jeweilige Selbstst\u00E4ndigkeit bewahren."@de ; rdfs:comment "Ein f\u00F6deriertes Informationssystem (oft auch f\u00F6deriertes Datenbanksystem) ist ein Informationssystem, das einen Zugriff auf mehrere autonome Informationsquellen bietet, ohne dass deren Daten kopiert werden, wie es beispielsweise in einem Data Warehouse der Fall ist. Diese Form der Integration mehrerer Datenquellen, bei der diese selbst unver\u00E4ndert bleiben, wird auch als virtuelle Informationsintegration bezeichnet."@de , "A federated database system is a type of meta-database management system (DBMS) which transparently integrates multiple autonomous database systems into a single federated database. The constituent databases are interconnected via a computer network, and may be geographically decentralized. Since the constituent database systems remain autonomous, a federated database system is a contrastable alternative to the (sometimes daunting) task of merging together several disparate databases."@en . @prefix skos: . @prefix ns9: . dbpedia:Federated_database_system skos:subject ns9:Database_management_systems . @prefix ns10: . dbpedia:Federated_database_system dbpprop:hasPhotoCollection ns10:Federated_database_system . dbpedia:Federated_database dbpprop:redirect dbpedia:Federated_database_system . dbpedia:Virtual_Database dbpprop:redirect dbpedia:Federated_database_system . dbpedia:Virtual_database dbpprop:redirect dbpedia:Federated_database_system . @prefix yago: . yago:Federated_database_system owl:sameAs dbpedia:Federated_database_system .