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SIGMOD
1999
ACM
101views Database» more  SIGMOD 1999»
8 years 11 months ago
Computing Capabilities of Mediators
Existing data-integration systems based on the mediation architecture employ a variety of mechanisms to describe the query-processing capabilities ofsources. However, these system...
Ramana Yerneni, Chen Li, Hector Garcia-Molina, Jef...
SIGMOD
1999
ACM
181views Database» more  SIGMOD 1999»
8 years 11 months ago
Approximate Computation of Multidimensional Aggregates of Sparse Data Using Wavelets
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
Jeffrey Scott Vitter, Min Wang
SIGMOD
1999
ACM
118views Database» more  SIGMOD 1999»
8 years 11 months ago
Data Integration and Warehousing in Telecom Italia
Stefano Trisolini, Maurizio Lenzerini, Daniele Nar...
SIGMOD
1999
ACM
107views Database» more  SIGMOD 1999»
8 years 11 months ago
Efficient Concurrency Control for Broadcast Environments
A crucial consideration in environments where data is broadcast to clients is the low bandwidth available for clients to communicate with servers. Advanced applications in such en...
Jayavel Shanmugasundaram, Arvind Nithrakashyap, Ra...
SIGMOD
1999
ACM
136views Database» more  SIGMOD 1999»
8 years 11 months ago
Query Rewriting for Semistructured Data
We address the problem of query rewriting for TSL, a language for querying semistructured data. We develop and present an algorithm that, given a semistructured query q and a set ...
Yannis Papakonstantinou, Vasilis Vassalos
SIGMOD
1999
ACM
143views Database» more  SIGMOD 1999»
8 years 11 months ago
WALRUS: A Similarity Retrieval Algorithm for Image Databases
Traditional approaches for content-based image querying typically compute a single signature for each image based on color histograms, texture, wavelet transforms etc., and return...
Apostol Natsev, Rajeev Rastogi, Kyuseok Shim
SIGMOD
1999
ACM
107views Database» more  SIGMOD 1999»
8 years 11 months ago
Client-Site Query Extensions
We explore the execution of queries with client-site userdefined functions (UDFs). Many UDFs can only be executed at the client site, for reasons of scalability, security, confide...
Tobias Mayr, Praveen Seshadri
SIGMOD
1999
ACM
98views Database» more  SIGMOD 1999»
8 years 11 months ago
Integration of Spatial Join Algorithms for Processing Multiple Inputs
Several techniques that compute the join between two spatial datasets have been proposed during the last decade. Among these methods, some consider existing indices for the joined...
Nikos Mamoulis, Dimitris Papadias
SIGMOD
1999
ACM
90views Database» more  SIGMOD 1999»
8 years 11 months ago
PowerBookmarks: A System for Personalizable Web Information Organization, Sharing, and Management
Wen-Syan Li, Quoc Vu, Edward Y. Chang, Divyakant A...
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