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| Content Provider | Springer Nature Link |
|---|---|
| Author | Conrad, Stefan |
| Copyright Year | 2002 |
| Abstract | Ein zentrales Problem bei der Integration heterogener Datenquellen ist die Bestimmung einer gesamtheitlichen Beschreibung des integrierten Datenbestands. Ausgehend von den Beschreibungen (Datenbankschemata) der vorhandenen Datenbestände ist ein integriertes Schema zu bilden, das als konzeptionelles Schema des Gesamtdatenbestands dient. Dieser Prozess wird als Schemaintegration bezeichnet. Ausgehend von einer abstrakten Systemarchitektur für föderierte Datenbanksysteme, die als Basis für vielfältige Integrationszenarien verwendet werden kann, stellen wir zunächst eine Schema-Referenzarchitektur vor, die den Prozess der Schemaintegration darzustellen hilft. Anschließend wird eine einfache Klassifikation von Integrationskonflikten wiedergegeben, bevor wir die gemeinsamen Grundprinzipien vieler Schemaintegrationsverfahren vorstellen. Wir analysieren dann die Stärken und Schwächen der bekannten Schemaintegrationsverfahren. Aus dieser Analyse ergeben sich verschiedene Fragestellungen, die aktuell Gegenstand der Forschung sind bzw. noch erforscht werden müssen. Mit einer kurzen Darstellung ausgewählter Fragen schließt dieser Beitrag. An essential task in integrating heterogeneous data sources is the construction of a common and uniform description of the integrated data. Starting with the descriptions (database schemata) of the local data sources an integrated schema has to be found which can serve as conceptual schema for the integrated data. This process is called schema integration. First, we introduce an abstract system architecture for federated database systems as a basis for manifold integration scenarios. Then we discuss a schema reference architecture which helps to describe the process of schema integration. Afterwards, we take up a basic classification of integration conflicts from the literature before we present the common principles of many schema integration techniques. We analyse the strengths and weaknesses of the known schema integration techniques. From those analyses a number of questions can be derived as current topics of ongoing or future research. We conclude by briefly discussing selected challenging research problems. |
| Starting Page | 101 |
| Ending Page | 111 |
| Page Count | 11 |
| File Format | |
| ISSN | 01783564 |
| Journal | Informatik - Forschung und Entwicklung |
| Volume Number | 17 |
| Issue Number | 3 |
| Language | German |
| Publisher | Springer-Verlag |
| Publisher Date | 2014-02-21 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | Subscribed |
| Subject Keyword | Computer Science Computer Hardware Computer Systems Organization and Communication Networks Software Engineering/Programming and Operating Systems Data Structures, Cryptology and Information Theory Theory of Computation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Science |
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