haku: @author Stickel, E. / yhteensä: 3
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| Tekijä: | Rauh, O. Stickel, E. |
| Otsikko: | Modeling deductive information systems using ERMded |
| Lehti: | Decision Support Systems
1996 : OCT, VOL. 18:2, p. 135-144 |
| Asiasana: | DECISION SUPPORT SYSTEMS MODELS ECONOMICS |
| Kieli: | eng |
| Tiivistelmä: | Today traditional information systems and deductive systems are modeled and implemented separately. Most users, however, demand integrated systems which meet their everyday information needs and have deductive capabilities as well. The well-known entity-relationship approach to conceptual data modeling is extended to cover modeling of such systems. First, a descriptive query language is introduced as a basis. Then it is shown how this language may be used to define derivable schema components. |
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