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This paper outlines the principle features of a Ph.D. programme of work. Section one describes the aims of the research. Section two looks at the nature of digital maps and their importance in the broader context of geographic information. Section three looks at the two major aspects of the research. Section four discusses the role of category theory in the research. Finally the conclusion is presented in section five.
Browne, P. & Jackson, M. (2004). Towards a unified spatial-temporal data model and query language for geographical information systems. British National Conference on Databases, Edinburgh, Scotland. doi:10.21427/ym59-zp53