ABSTRACT XML has attracted a great deal of attention as standard data exchange format,
and XML representing geographic information such as G-XML has been developed. In near …

A method for constructing spatial index over the native XML is proposed. It also includes the
path-index and the value-index, which are the base of spatial index. A new query language …

GML is becoming the de facto standard for electronic data exchange among the applications
of Web and distributed geographic information systems. However, the conventional query …

In this paper, we investigate the use of XQuery to retrieve geographic data represented in
GML. The proposed approach is aimed at overcoming the limitations of the earlier proposed …

GML spatial data query language is a very important part of native GML spatial database
system, it is an indispensable component to GML documents for spatial data query as well …

XML is becoming the data exchange standard on the Internet. Previously proposed XML
query languages, such as XQuery, Quilt, YALT, Lorel, and XML-QL, lack schema definition of …

GML is an XML encoding for representation and exchange of geographic information. With
the popularity of GML, more and more spatial data exists in GML format. It raises the problem …

Geospatial information has been growing rapidly and has been used in variety of
applications such as Geographic Information Systems, bioinformatics, and decision support …

Some XML databases have capabilities to store spatial data with certain spatial data
formats. However, spatial operations that can be handled are still limited compared to SQL …

Background Firstly, this paper gives a formal definition of XML tree data model in context
environment. Secondly, it proposes an improved index structure to retrieve XML data based …