Results 221 to 230 of about 117,366 (264)
Some of the next articles are maybe not open access.
1995
An algorithm for ranking spatial objects according to increasing distance from a query object is introduced and analyzed. The algorithm makes use of a hierarchical spatial data structure. The intended application area is a database environment, where the spatial data structure serves as an index.
Gísli R. Hjaltason, Hanan Samet
openaire +1 more source
An algorithm for ranking spatial objects according to increasing distance from a query object is introduced and analyzed. The algorithm makes use of a hierarchical spatial data structure. The intended application area is a database environment, where the spatial data structure serves as an index.
Gísli R. Hjaltason, Hanan Samet
openaire +1 more source
dedale, a spatial constraint database
1998This paper presents a first prototype of a constraint database for spatial information, dedale. Implemented on top of the O2 DBMS, data is stored in an object-oriented framework, with spatial data represented using linear constraints over a dense domain. The query language is the standard OQL, with special functions for constraint solving and geometric
Grumbach, Stéphane +3 more
openaire +2 more sources
2005
Section I: Modeling and Systems, Chapter I. Survey on Spatial Data Modeling Approaches, Chapter II. Integrating Web Data and Geographic Knowledge into Spatial Databases, Section II: Indexing Techniques, Chapter III. Object-Relational Spatial Indexing, Chapter IV. Quadtree-Based Image Representation and Retrieval, Chapter V.
Shashi Shekhar +2 more
openaire +2 more sources
Section I: Modeling and Systems, Chapter I. Survey on Spatial Data Modeling Approaches, Chapter II. Integrating Web Data and Geographic Knowledge into Spatial Databases, Section II: Indexing Techniques, Chapter III. Object-Relational Spatial Indexing, Chapter IV. Quadtree-Based Image Representation and Retrieval, Chapter V.
Shashi Shekhar +2 more
openaire +2 more sources
2017
Spatial databases maintain space information which is appropriate for applications where there is need to monitor the position of an object or event over space. Spatial databases describe the fundamental representation of the object of a dataset that comes from spatial or geographic entities.
Grace L. Samson +3 more
openaire +1 more source
Spatial databases maintain space information which is appropriate for applications where there is need to monitor the position of an object or event over space. Spatial databases describe the fundamental representation of the object of a dataset that comes from spatial or geographic entities.
Grace L. Samson +3 more
openaire +1 more source
A spatial database as a component of integrated database system
Proceedings 1999 International Symposium on Database Applications in Non-Traditional Environments (DANTE'99) (Cat. No.PR00496), 2003Huge amounts of spatial data have been accumulated by government agencies and other organizations for various kinds of applications, such as land information management, asset and facility management, resource management, and environment management. These data are typically collected, stored and used by different custodians for very specific purposes ...
Maria E. Orlowska, Xiaofang Zhou 0001
openaire +3 more sources
2007
Spatial database research has continued to advance greatly since three decades ago, addressing the growing data management and analysis needs of spatial applications. This research has produced a taxonomy of models for space, conceptual models, spatial query languages and query processing, spatial file organization and indexes, and spatial data mining.
Gandhi, Vijay +2 more
openaire +1 more source
Spatial database research has continued to advance greatly since three decades ago, addressing the growing data management and analysis needs of spatial applications. This research has produced a taxonomy of models for space, conceptual models, spatial query languages and query processing, spatial file organization and indexes, and spatial data mining.
Gandhi, Vijay +2 more
openaire +1 more source
Keyword Search on Spatial Databases
2008 IEEE 24th International Conference on Data Engineering, 2008Many applications require finding objects closest to a specified location that contains a set of keywords. For example, online yellow pages allow users to specify an address and a set of keywords. In return, the user obtains a list of businesses whose description contains these keywords, ordered by their distance from the specified address.
Ian De Felipe +2 more
openaire +1 more source
Navigation of the Internet with spatial databases
Proceedings 1999 International Symposium on Database Applications in Non-Traditional Environments (DANTE'99) (Cat. No.PR00496), 2003Most Internet search engines are keyword based. They are not efficient for the queries where geographical location is important, such as finding hotels close to a place of interest. A natural interface for spatial searching is a map, which can be used not only to display locations of search results but also to assist forming search conditions.
Joseph D. Yates, Xiaofang Zhou 0001
openaire +2 more sources
Communicating uncertainty in spatial databases
Transactions in GIS, 1996As applications of spatial databases become more sophisticated and diverse, an issue of growing concern is the inability to communicate to users the uncertainty of products derived from their systems. This is important not only because users should be able to compare the quality of database outputs against the quality requirements of their tasks (in ...
Gary J. Hunter, Michael F. Goodchild
openaire +1 more source
Spatial Indexing for Video Databases
Journal of Visual Communication and Image Representation, 1996Abstract Spatial reasoning techniques based on 2D string systems have been successfully applied to indexing pictorial databases. We demonstrate how similar techniques may be extended to represent video sequences, and how this representation may be compressed. Query schemes for both single frame queries, and full subsequence queries are presented. The
Kim Shearer +2 more
openaire +1 more source