Object-Orientation FAQ

ConceptBase is a multi-user deductive object manager mainly
intended for conceptual modeling and the coordination of design
environments. The system implements a dialect of Telos which
amalgamates properties of deductive and object-oriented languages. 

Key features are 

   hybrid representation with frame-like objects,
   semantic nets and logical specifications 

   unlimited extensibility by metaclass
   hierarchies (useful for IRDS, schema evolution etc.) 

   deductive rules & integrity constraints 

   queries as classes with membership constraints 

   persistent object management with the ability to interrogate
   past states of the database 

ConceptBase follows a client-server architecture. Client programs
can connect to the ConceptBase server and exchange data via
interprocess communication. The X11-based ConceptBase user
interface offers a palette of graphical, tabular and textual tools
for editing and browsing the object base. The ConceptBase
programming interface allows the users to create their own
client programs in C or Prolog.