I. Schmitt and C. Turker. Refining Extensional Relationships and Existence Requirements for Incremental Schema Integration. In G. Gardarin, J. French, N. Pissinou, K. Makki, and L. Bougamin, editors, Proc. of the 7th ACM CIKM Int. Conf. on Information and Knowledge Management, November 3--7,  Home/Search Document Details and Download
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SIGMA-FDB: Overview of the Magdeburg-Approach to.. - Höding, Schwarz.. (Correct)
....n Fig. 2. Extended Schema Architecture tionships is a quite costly step and has to be done mainly by the designer of the federation. Based on the idea that integrity constraints restrict the possible extension of related classes, the derivation of extensional relationships can be supported [16, 13]. The research results were partially implemented in the SIGMA Bench . 2.3 File Integration Many databases containing useful data are based on files. Traditional FDBS design approaches fail in integrating data files since there is neither a data model nor a database schema which can be ....
I. Schmitt and C. Turker. Refining Extensional Relationships and Existence Requirements for Incremental Schema Integration. In G. Gardarin, J. French, N. Pissinou, K. Makki, and L. Bougamin, eds., Proc. 7th ACM CIKM Int. Conf. on Information and Knowledge Management, pp. 322--330. ACM Press, 1998.
Combining a Formal with an Example-driven Approach for.. - Geist, Sattler, Schmitt Self-citation (Schmitt) (Correct)
....the potential extensional overlaps the original potential extensions can be decomposed into disjoint base extensions. If, for example, the classes A and B extensionally overlap then their extensions are decomposed into three base extensions (A n B; B n A; A B) The algorithm presented in [ST98] computes the base extensions from extensional assertions and is implemented in the SIGMA Bench . The base extensions of our example are given in Fig. 2. In our example, the original exten Local Classes 1 2 3 4 5 6 7 8 9 Library.Publication X X X X Library.Book X X Library.Journal Paper X X ....
I. Schmitt and C. Turker. Refining Extensional Relationships and Existence Requirements for Incremental Schema Integration. In G. Gardarin, J. French, N. Pissinou, K. Makki, and L. Bougamin, editors, Proc. of the 7th ACM CIKM Int. Conf. on Information and Knowledge Management, November 3--7,
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