Gral: an extensible relational database system for geometric applications
VLDB '89 Proceedings of the 15th international conference on Very large data bases
A visual tool for querying geographic databases
AVI '00 Proceedings of the working conference on Advanced visual interfaces
A foundation for representing and querying moving objects
ACM Transactions on Database Systems (TODS)
Usability Testing and Research
Usability Testing and Research
Survey of Spatio-Temporal Databases
Geoinformatica
Conceptual Data Modeling for Spatiotemporal Applications
Geoinformatica
Modeling and Querying Moving Objects
ICDE '97 Proceedings of the Thirteenth International Conference on Data Engineering
A High Level Visual Language for Spatial Data Management
VISUAL '99 Proceedings of the Third International Conference on Visual Information and Information Systems
Metaphors for Visual Querying Spatio-Temporal Databases
VISUAL '00 Proceedings of the 4th International Conference on Advances in Visual Information Systems
Query-By-Trace: Visual Predicate Specification in Spatio-Temporal Databases
VDB 5 Proceedings of the Fifth Working Conference on Visual Database Systems: Advances in Visual Information Management
SVIQUEL: A Spatial Visual Query and Exploration Language
DEXA '98 Proceedings of the 9th International Conference on Database and Expert Systems Applications
Geo-Relational Algebra: A Model and Query Language for Geometric Database Systems
CG '88 Proceedings of the International Workshop on Computational Geometry on Computational Geometry and its Applications
VISCO: Bringing Visual Spatial Querying to Reality
VL '98 Proceedings of the IEEE Symposium on Visual Languages
Actions and Events in Interval Temporal Logic
Actions and Events in Interval Temporal Logic
SECONDO: An Extensible DBMS Platform for Research Prototyping and Teaching
ICDE '05 Proceedings of the 21st International Conference on Data Engineering
Literature review of spatio-temporal database models
The Knowledge Engineering Review
Query-by-Object Interface for Dynamic Access and Information Requirement Elicitation
ICMB '05 Proceedings of the International Conference on Mobile Business
Visualization Task Performance with 2D, 3D, and Combination Displays
IEEE Transactions on Visualization and Computer Graphics
Visual spatio-temporal function-based querying
The Visual Computer: International Journal of Computer Graphics
GeoPQL: a geographical pictorial query language that resolves ambiguities in query interpretation
Journal on Data Semantics III
Hi-index | 0.00 |
Nowadays, two of the main challenges involving spatio-temporal databases concern the integration of their spatial and temporal features to store and query spatial objects changing over time, and the development of a simple and friendly language to query spatio-temporal data. In this paper we gather these two challenges by proposing Moving GeoPQL, a language defined in order to express spatio-temporal queries, extending the Geographical Pictorial Query language (GeoPQL). The proposed evolution is based on the concept of temporal layer that allows specifying the spatial configuration of moving objects in a time interval. More layers allow representing changes in terms of spatial configurations. Some examples of query formulation and system operation are described in the article. Finally, an experiment has been carried out for evaluating the usability of the Moving GeoPQL system. Results of this experiment showed that it facilitates the spatio-temporal query formulation since it is more user-friendly and ease to use compared to textual query languages.