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Download Advances in Spatial and Temporal Databases: 7th by Jianwen Su, Haiyan Xu, Oscar H. Ibarra (auth.), Christian S. PDF

By Jianwen Su, Haiyan Xu, Oscar H. Ibarra (auth.), Christian S. Jensen, Markus Schneider, Bernhard Seeger, Vassilis J. Tsotras (eds.)

The 7th foreign Symposium on Spatial and Temporal Databases (SSTD 2001), held in Redondo seashore, CA, united states, July 12{15, 2001, introduced jointly major researchers and builders within the sector of spatial, temporal, and spatio-temporal databases to debate the state-of-the-art in spatial and temporal info administration and purposes, and to appreciate the demanding situations and - seek instructions within the advancing zone of knowledge administration for relocating gadgets. The symposium served as a discussion board for disseminating study in spatial and temporal information administration, and for maximizing the interchange of data between researchers from the tested spatial and temporal database com- nities. The trade of study rules and effects not just contributes to the tutorial area, but additionally bene ts the person and advertisement groups. SSTD 2001 was once the 7th within the sequence of symposia that all started in Santa Barbara a dozen years in the past and has because been held each years, in Zurich, Singapore, Portland (Maine), Berlin, and Hong Kong. by way of 1999, the sequence had develop into good verified because the most suitable overseas discussion board dedicated exclusively to spatial database administration, and it used to be made up our minds to increase the scope of the sequence to additionally hide temporal database administration. This prolonged scope used to be selected due, partially, to the expanding significance of study that considers spatial and temporal elements jointly.

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Additional info for Advances in Spatial and Temporal Databases: 7th International Symposium, SSTD 2001 Redondo Beach, CA, USA, July 12–15, 2001 Proceedings

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26 M. Vazirgiannis and O. , combination of WITHIN predicates) always the resulting set of trajectories will be the intersection (for conjunctive queries) or the union (for disjunctive ones) of the respective query spaces. Hence the spatiotemporal indexing scheme suffices for Boolean combination of queries. 3 Implementation Design of the Predicates in a Spatial Database Environment Assuming that the data types needed are implemented in an OR-DBMSs [11, 9, 4] we need to implement functions/operators that represent the functionality of these data types.

The Computer Journal, 37(1). 25-34. O. Wolfson, B. Xu, S. Chamberlain, L. Jiang: Moving Objects DataBases: Issues and solutions. In proceedings of SSDB conference 1998. 111-122. Appendix A. Primitives Provided by Commercial Products In this section we refer to the spatial and other functions provided by commercial products and are exploited in our design. The primitives indicates by * are provided by both Informix Spatial Datablade and ArcView. The ones without * are provided only by ArcView. Function name *contains(shape1,shape2) *intersect(shape1,shape2) along(polyline,dist) selectby(shape) traveltime(polyline p).

E. if the route-distance between LOC(o,starttime) and e1 is not more than 5km, then we consider WHEN_AT(o,e1). If WHEN_AT(o,e1)‡ endtime, this means that at endtime the object has not reached the point R yet; but then clearly, from its location at endtime the distance to R is not more than 5km, since at starttime it is not more than 5km away. We conclude that the trajectory satisfies the condition of the query, and the algorithm continues to examine the next trajectory. e. if endtime > WHEN_AT(o,e1), we have to examine whether the sub- trajectory between e1 and LOC(o,endtime) satisfies the condition with respect to e2, e3, e4, etc.

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