| P. van Bommel and Th.P. van der Weide. Reducing the search space for conceptual schema transformation. Data & Knowledge Engineering, 8:269--292, 1992. |
....Figure 2: Example equivalence preserving schema transformation When a data schema is mapped to a database schema, in general, a mapping algorithm is used that tries to find a (nearly) optimal representation. A wide range of algorithms for this purpose exists, for instance: Ber86] SEC87] BW92] Ris93] MHR93] Hal95] Bom94] and [Rit94] For the reverse process, reverse engineering, also a wide range of strategies and algorithms exists (e.g. Kal91] FG92] SS93] 3 [CBS94] Note that reverse engineering may also be regarded as a sequence of schema transformations (basically ....
....is not a strong one as the ORM modelling technique is general enough to cater for ER based data schemas as well ( BBMP95] HP95] In [CH94] Cam94] and [CP96] it is shown how ER can be regarded as an abstraction from ORM schemas. Research is also underway (together with the authors of [BW92] to find an apt schema language to describe both data schemas as well as database schemas. This would allow us to describe the entire modelling process of an information system s data(base) schema within one modelling language. A likely candidate for this aim is the tree representation of ORM ....
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P. van Bommel and Th.P. van der Weide. Reducing the search space for conceptual schema transformation. Data & Knowledge Engineering, 8:269--292, 1992.
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P. van Bommel and Th.P. van der Weide. Reducing the search space for conceptual schema transformation. Data & Knowledge Engineering, 8:269--292, 1992. 10
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P. van Bommel and Th.P. van der Weide. Reducing the search space for conceptual schema transformation. Data & Knowledge Engineering, 8:269--292, 1992.
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P. van Bommel and Th.P. van der Weide. Reducing the search space for conceptual schema transformation. Data & Knowledge Engineering, 8:269--292, 1992.
No context found.
P. van Bommel and Th.P. van der Weide. Reducing the search space for conceptual schema transformation. Data & Knowledge Engineering, 8:269--292, 1992.
No context found.
P. van Bommel and Th.P. van der Weide. Reducing the search space for conceptual schema transformation. Data & Knowledge Engineering, 8:269--292, 1992. 21
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P. van Bommel and Th.P. van der Weide. Reducing the search space for conceptual schema transformation. Data & Knowledge Engineering, 8:269--292, 1992.
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