An Extension of XQuery for Moving Objects over GML

초록

We propose moving objects data model and its query language over GML documents. The conventional query languages about GML have been studied with priority given to the integration of geographic information, the support of spatial operations, and etc. However, it lacks the support for moving objects queries. therefore, in this paper, we propose the noving obhects query language that supports moving objects queries for GML　documents by extension of XQuery that is standard XML query language. Also, data model, algebra operation and various moving objects operators for the proposed query language are designed.