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The application of Hasse diagrams for comparative evaluation may be useful. One drawback, however, is that sometimes the Hasse diagrams consists of several parts, which are not connected. In such cases the interpretation becomes troublesome or even impossible. With the example of environmental databases on CD-ROM it is shown how lattice theory helps in such cases. It can be exemplified that a specific...
The evaluation of databases is of great importance for potential users. The usual technique to define a ranking index however is not helpful, because users may have different interests concerning databases. Therefore evaluation techniques are needed, which do not mask different elements of information performing a ranking. The appropriate technique is given by the theory of order relation which...
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