ABSTRACT 

Quixote system provides important facilities required for knowledge infor-
mation processing, such as knowledge representation and inferences. Quixote 
also provides basic functions for constructing an integrated knowledge-base 
management system on top of Kappa-P, a nested relational DBMS. 

KEY FEATURES 

Quixote is a language for deductive object-oriented databases (DOODs), 
and can be seen as an extended logic programming language with its object-
orientation features, subsumption constraints, and hierarchical modules. 

Object Identity: Using extended terms (object terms), representing in- 
  trinsic properties of objects, as object identifiers 

Subsumption Constraint: Using subsumption relations among object 
  terms as constraints for properties 

Property Inheritance: Using subsumption relations for property inher-
  itance among objects including exceptions and multiple inheritance 

Module: Introducing the modules having object terms as their identifiers 
  in order to modularize knowledge bases, and the inter-module (submod-
  ule) relation for defining hierarchical structure of knowledge bases 

Rule Inheritance: Importing and exporting rules among modules by sub-
  module relations and set-theoretical operations including exception spec-
  ified by modes of rules 

Conditional Query: Introducing queries having additional assertions to 
  a knowledge base, and answers with assumed constraints on properties 

SYSTEM CONFIGURATION 




					- 81 -