Towards a unified framework for spatial data models

Journal of the Brazilian Computer Society

Câmara, Gilberto¹  Velho, Luiz¹  Instituto Nacional de Pesquisas Espaciais, São José dos Campos, Brazil¹  Paiva, João Argemiro¹  Gomes, Jonas¹  Instituto de Matemática Pura e Aplicada, Rio de Janeiro, Brazil¹  Monteiro, Antônio Miguel Vieira¹ 

关键词: Geographical Information Systems;    Spatial Databases;    Geographical Data Models.;   

DOI  :  10.1590/S0104-65002000000200003

学科分类：农业科学（综合）

来源: Springer U K

【 摘 要 】

This paper describes a unified framework for the problems of modelling and processing spatial entities. We propose a general definition of spatial objects, and show that the different types of spatial data can be expressed as particular cases of this definition. Furthermore, we present a taxonomy for the various types of GIS operations, defined in terms of the properties of this definition. Our goal is to argue that GIS data types and operations can be defined based on a single formal notion, which encapsulates the GIS concepts of both continuous fields and discrete features, with important consequences for system and interface design, interoperabilty issues and language proposal.

【 授权许可】

Unknown