An extension of XQuery for moving objects over GML

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, etc. However, it lacks the support for moving object queries. Therefore, in this paper, we propose the moving objects query language that supports moving object 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.

[1]  Ralf Hartmut Güting,et al.  Spatio-Temporal Data Types: An Approach to Modeling and Querying Moving Objects in Databases , 1999, GeoInformatica.

[2]  Shashi Shekhar,et al.  WMS and GML based interoperable web mapping system , 2001, GIS '01.

[3]  S. Boag,et al.  XQuery 1.0 : An XML query language, W3C Working Draft 12 November 2003 , 2003 .

[4]  Letizia Tanca,et al.  XML-GL: A Graphical Language for Querying and Restructuring XML Documents , 1999, SEBD.

[5]  Pascual González,et al.  A specification of a spatial query language over GML , 2001, GIS '01.

[6]  Paul Douglas,et al.  Proceedings International Conference on Information Technology: Coding and Computing , 2002, Proceedings. International Conference on Information Technology: Coding and Computing.

[7]  Markus Schneider,et al.  A foundation for representing and querying moving objects , 2000, TODS.

[8]  C. M. Sperberg-McQueen,et al.  eXtensible Markup Language (XML) 1.0 (Second Edition) , 2000 .

[9]  Masatoshi Arikawa,et al.  A Standard XML Based Protocol for Spatial Data Exchange , 2000 .

[10]  Letizia Tanca,et al.  XML-GL: a graphical language for querying and restructuring WWW Data , 1999, WWW 1999.

[11]  Jennifer Widom,et al.  The Lorel query language for semistructured data , 1997, International Journal on Digital Libraries.

[12]  James Clark,et al.  XSL Transformations (XSLT) Version 1.0 , 1999 .

[13]  David Beech,et al.  A Formal Data Model and Algebra for XML , 1999 .

[14]  Alin Deutsch,et al.  XML-QL: A Query Language for XML , 1998 .