Some Features of the TAXIS Data Model.

@inproceedings{DBLP:conf/vldb/MylopoulosW80,
  author    = {John Mylopoulos and
               Harry K. T. Wong},
  title     = {Some Features of the TAXIS Data Model},
  booktitle = {Sixth International Conference on Very Large Data Bases, October
               1-3, 1980, Montreal, Quebec, Canada, Proceedings},
  publisher = {IEEE Computer Society},
  year      = {1980},
  pages     = {399-410},
  ee        = {db/conf/vldb/MylopoulosW80.html},
  crossref  = {DBLP:conf/vldb/80},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

This paper's principal goal is to provide a discussion on issues raised by the coexistence in a semantic data model of

(i) An object-oriented framework including the notions of token, class and property as well as the IS-A and INSTANCE-OF relations;

(ii) Transactions that can cause state changes;

(iii) Special (null) values such as "unknown", "nothing" and "inconsistent".

The paper presents a number of postulates that need to be satisfied by a database defined in forms of such features for its definition to be well-formed. The discussion uses as starting point TAXIS, a language for the design of interactive applications systems which offers all three types of features.

Key words and phrases: semantic data model, semantic network, null values, generalization hierarchy, data semantics, knowledge representation, conceptual model, entity model.

CR categories: 3.70, 3.73, 4.22, 4.29, 4.33, 4.34, 4.39.

Copyright © 1980 by The Institute of Electrical and Electronic Engineers, Inc. (IEEE). Abstract used with permission.

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