A language for the LOGIDATA+ model is presented. The language is rule-based and allows for the management of complex structures, classes, hierarchies and data functions. Negation is allowed in the body of rules. The semantics is based on a fixpoint operator and represents an extension of ordinary declarative-language semantics. The main issue is the management of oid-invention, that is, the creation and manipulation of objects belonging to the classes of a scheme. In order to correctly deal with negation and multivalued data functions, an extended notion of stratification is introduced.

The LOGIDATA+ Language and Semantics

MECCA, Giansalvatore;
1993-01-01

Abstract

A language for the LOGIDATA+ model is presented. The language is rule-based and allows for the management of complex structures, classes, hierarchies and data functions. Negation is allowed in the body of rules. The semantics is based on a fixpoint operator and represents an extension of ordinary declarative-language semantics. The main issue is the management of oid-invention, that is, the creation and manipulation of objects belonging to the classes of a scheme. In order to correctly deal with negation and multivalued data functions, an extended notion of stratification is introduced.
1993
354056974X
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11563/7276
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