Tripod: A Comprehensive Model for Spatial and Aspatial Historical Objects

  • Authors:
  • Tony Griffiths;Alvaro A. A. Fernandes;Norman W. Paton;Keith T. Mason;Bo Huang;Michael F. Worboys

  • Affiliations:
  • -;-;-;-;-;-

  • Venue:
  • ER '01 Proceedings of the 20th International Conference on Conceptual Modeling: Conceptual Modeling
  • Year:
  • 2001

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Abstract

Spatio-temporal extensions to data models have been an active area of research for a number of years. To date, much of this work has focused on the relational data model, with object data models receiving far less consideration. This paper presents a spatio-historical object model that uses a specialized mechanism, called a history, to maintain knowledge about entities that change over time. Key features of the resulting proposal include: (i) consistent representations of primitive spatial and temporal types; (ii) a component-based design in which spatial, temporal and historical extensions are formalized incrementally, for subsequent use together or separately; (iii) a formally specified data model. The model can be used directly during the design of spatio-historical applications, but also forms the basis of an implementation activity developing a spatio-historical object database management system.