Achim Schlosser

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User-defined data types such as intervals require specialized access methods to be efficiently searched and queried. As database implementors cannot provide appropriate index structures and query processing methods for each conceivable data type, present-day object-relational database systems offer extensible indexing frameworks that enable developers to(More)
ConceptBase is a multiuser deductive object manager intended for conceptual modeling, meta modeling, and coordination in design environments. The system implements O-Telos, a dialect of Telos integrating properties of deductive and object-oriented languages. It uniformly represents all information regardless of its abstraction level (data, class, meta(More)
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