ABSTRACT

This chapter provides a comprehensive set of diagrams to illustrate the significant modelling decisions when applying the spatio-temporal data model (STDM) to a knowledge domain. Existence encapsulates the space-time path over which the historical events of a public boundary evolve over space and time. Creation represents the space-time origin of a public boundary lifespan that will evolve towards the future or past from its origin Public boundaries represent the line of physical contact between administrative units in Great Britain. The arrangement of public boundaries forms an irregular tessellation of polygons that represent the whole hierarchy of local government and European constituency areas. Demise characterises the closure of a space-time path. It can occur on the space-time path at any time during the lifespan of a public boundary. The events and states from the space-time paths have been modelled as object classes.