Representation and Management of Evolving Features in OS MasterMap ITN Data

摘要

At the heart of any geographic information system (GIS) is a database system. Data representing geographic entities and spatial features are stored in these GIS and manipulated and visualised according to the user's input. The rapid emergence of GIS has demanded the evolution of database systems to support these spatial data, and to provide powerful analysis operations and functions to assist in decision support, projections, predictions, and simulations in a wide variety of problem domains. The research reported on in this paper investigates a specific area of interest in geospatial database systems, that of the management and representation of evolving features. Features in a GIS group together entities or areas that are of particular interest from a specific viewpoint, such as counties, population, or in this case, roads.