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Mediators in the Architecture of Future Information Systems
March 1992 (vol. 25 no. 3)
pp. 38-49

For single databases, primary hindrances for end-user access are the volume of data that is becoming available, the lack of abstraction, and the need to understand the representation of the data. When information is combined from multiple databases, the major concern is the mismatch encountered in information representation and structure. Intelligent and active use of information requires a class of software modules that mediate between the workstation applications and the databases. It is shown that mediation simplifies, abstracts, reduces, merges, and explains data. A mediator is a software module that exploits encoded knowledge about certain sets or subsets of data to create information for a higher layer of applications. A model of information processing and information system components is described. The mediator architecture, including mediator interfaces, sharing of mediator modules, distribution of mediators, and triggers for knowledge maintenance, are discussed.

Citation:
Gio Wiederhold, "Mediators in the Architecture of Future Information Systems," Computer, vol. 25, no. 3, pp. 38-49, March 1992, doi:10.1109/2.121508
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