NDLI: Early separation of filter and refinement steps in spatial query optimization

Content Provider	IEEE Xplore Digital Library
Author	Ho-Hyun Park Chan-Gun Lee Yong-Ju Lee Chin-Wan Chung
Copyright Year	1999
Description	Author affiliation: Dept. of Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea (Ho-Hyun Park)
Abstract	The spatial query has been processed in two steps, the filter step and the refinement step, due to the large volume and high complexity of the spatial data. However, this approach has been considered only in the query execution phase after completion of the query optimization phase. This paper presents query optimization strategies which take the characteristics of spatial databases into account. The first strategy is the separation of filter and refinement steps not in the query execution phase but in the query optimization phase. As the second strategy, several refinement operations can be combined in processing a complex query, and as the third strategy several filter operations can also be combined. We call the optimization technique utilizing these strategies the early separated filter and refinement (ESFAR). This paper also presents a rule-based optimization technique for ESFAR.
Starting Page	161
Ending Page	168
File Size	155467
Page Count	8
File Format	PDF
ISBN	0769500846
DOI	10.1109/DASFAA.1999.765748
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-04-21
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Query processing Spatial databases Relational databases Finite impulse response filter Database systems Geographic Information Systems Costs Electrical capacitance tomography Computer science Application software
Content Type	Text
Resource Type	Article

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