Multidimensional access methods
ACM Computing Surveys (CSUR)
XML-based information mediation for digital libraries
Proceedings of the fourth ACM conference on Digital libraries
Create a large-scale digital library for geo-referenced information
Proceedings of the fourth ACM conference on Digital libraries
The Alexandria digital earth prototype
Proceedings of the 1st ACM/IEEE-CS joint conference on Digital libraries
Looking at digital library usability from a reuse perspective
Proceedings of the 1st ACM/IEEE-CS joint conference on Digital libraries
G-Portal: a map-based digital library for distributed geospatial and georeferenced resources
Proceedings of the 2nd ACM/IEEE-CS joint conference on Digital libraries
R-trees: a dynamic index structure for spatial searching
SIGMOD '84 Proceedings of the 1984 ACM SIGMOD international conference on Management of data
Efficient Computation of Spatial Joins
Proceedings of the Ninth International Conference on Data Engineering
Resource Annotation Framework in a Georeferenced and Geospatial Digital Library
ICADL '02 Proceedings of the 5th International Conference on Asian Digital Libraries: Digital Libraries: People, Knowledge, and Technology
IBM Systems Journal
On organizing and accessing geospatial and georeferenced web resources using the G-portal system
Information Processing and Management: an International Journal
On organizing and accessing geospatial and georeferenced Web resources using the G-Portal system
Information Processing and Management: an International Journal
A design of spatial XQuery for mobile and location-based applications
ICWE'05 Proceedings of the 5th international conference on Web Engineering
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G-Portal is a web portal system providing a range of digital library services to access geospatial and georeferenced resources on the Web. Among them are the storage and query subsystems that provide a central repository of metadata resources organized under different projects. In GPortal, all metadata resources are represented in XML (Extensible Markup Language) and they are compliant to some resource schemas defined by their creators. The resource schemas are extended versions of a basic resource schema making it easy to accommodate all kinds of metadata resources while maintaining the portability of resource data. To support queries over the geospatial and georeferenced metadata resources, a XQuery-like query language known as RQL (Resource Query Language) has been designed. In this paper, we present the RQL language features and provide some experimental findings about the storage design and query evaluation strategies for RQL queries.