Ontology is the philosophical study of the nature of being, existence or reality in general, as well as of the basic categories of being and their relations. Traditionally listed as a part of the major branch of philosophy known as metaphysics, ontology deals with questions concerning what entities exist or can be said to exist, and how such entities can be grouped, related within a hierarchy, and subdivided according to their similarities and differences.
The principal questions of ontology are “What can be said to exist?” and “Into what categories, if any, can we sort existing things?” Various philosophers have provided different answers to this question.
One common approach is to divide the extant entities into groups called categories. Of course, such lists of categories differ widely from one another, and it is through the
co-ordination of different categorial schemes that ontology relates to such fields as theology, library science and artificial intelligence.
The paper describes objectives and possible solutions of the project dealing with the ontology of GF-TCCS (Ground Forces Tactical Command and Control System) and AF-TCCS (Air Forces Tactical Command and Control System).