A Uniform Representation Extension of Continuous and Discrete Dynamic Fields
F. Huang, Yu Fang, B. Chen · 2006
This paper proposes a uniform framework to represent and manipulate continuous and discrete dynamic field data in spatial database. Continuous and discrete dynamic fields are uniformly represented under a ternary schema including spatial domain, temporal domain and value function of a field variable. A prototype of spatial database extension of the uniform representation is developed and issues of the structure, data types, operating predicates and functions are discussed. The method provides a way to store, access and manipulate dynamic- field-model-based data. It also integrates field data and other kinds of spatial data from query language level and provides a reference to solve integrative transactions on question-oriented and nonprocedural spatial information.