Sciweavers

75 search results - page 7 / 15
» Determined: a system with novel techniques for XML query opt...
Sort
View
ICDE
2004
IEEE
137views Database» more  ICDE 2004»
14 years 9 months ago
Selectivity Estimation for XML Twigs
Twig queries represent the building blocks of declarative query languages over XML data. A twig query describes a complex traversal of the document graph and generates a set of el...
Neoklis Polyzotis, Minos N. Garofalakis, Yannis E....
WWW
2008
ACM
13 years 7 months ago
Divide, Compress and Conquer: Querying XML via Partitioned Path-Based Compressed Data Blocks
We propose a novel Partition Path-Based (PPB) grouping strategy to store compressed XML data in a stream of blocks. In addition, we employ a minimal indexing scheme called Block S...
Wilfred Ng, Ho Lam Lau, Aoying Zhou
VLDB
2004
ACM
101views Database» more  VLDB 2004»
14 years 28 days ago
Taming XPath Queries by Minimizing Wildcard Steps
This paper presents a novel and complementary technique to optimize an XPath query by minimizing its wildcard steps. Our approach is based on using a general composite axis called...
Chee Yong Chan, Wenfei Fan, Yiming Zeng
SSD
2005
Springer
185views Database» more  SSD 2005»
14 years 1 months ago
Evaluation of a Dynamic Tree Structure for Indexing Query Regions on Streaming Geospatial Data
Most recent research on querying and managing data streams has concentrated on traditional data models where the data come in the form of tuples or XML data. Complex types of strea...
Quinn Hart, Michael Gertz, Jie Zhang
DAGSTUHL
2007
13 years 9 months ago
An XML Framework for Integrating Continuous Queries, Composite Event Detection, and Database Condition Monitoring for Multiple D
Abstract Current, data-driven applications have become more dynamic in nature, with the need to respond to events generated from distributed sources or to react to information extr...
Susan Darling Urban, Suzanne W. Dietrich, Yi Chen