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VLDB
2004
ACM
161views Database» more  VLDB 2004»
16 years 6 months ago
Supporting top-k join queries in relational databases
Ranking queries produce results that are ordered on some computed score. Typically, these queries involve joins, where users are usually interested only in the top-k join results....
Ihab F. Ilyas, Walid G. Aref, Ahmed K. Elmagarmid
VLDB
2008
ACM
110views Database» more  VLDB 2008»
16 years 6 months ago
Enhancing histograms by tree-like bucket indices
Histograms are used to summarize the contents of relations into a number of buckets for the estimation of query result sizes. Several techniques (e.g., MaxDiff and V-Optimal) have ...
Francesco Buccafurri, Gianluca Lax, Domenico SaccÃ...
SIGMOD
2009
ACM
153views Database» more  SIGMOD 2009»
16 years 6 months ago
ELMR: lightweight mobile health records
Cell phones are increasingly being used as common clients for a wide suite of distributed, database-centric healthcare applications in developing regions. This is particularly tru...
Arvind Kumar, Amey Purandare, Jay Chen, Arthur Mea...
SIGMOD
2009
ACM
202views Database» more  SIGMOD 2009»
16 years 6 months ago
ZStream: a cost-based query processor for adaptively detecting composite events
Composite (or Complex) event processing (CEP) systems search sequences of incoming events for occurrences of userspecified event patterns. Recently, they have gained more attentio...
Yuan Mei, Samuel Madden
SIGMOD
2008
ACM
210views Database» more  SIGMOD 2008»
16 years 6 months ago
Private queries in location based services: anonymizers are not necessary
Mobile devices equipped with positioning capabilities (e.g., GPS) can ask location-dependent queries to Location Based Services (LBS). To protect privacy, the user location must n...
Gabriel Ghinita, Panos Kalnis, Ali Khoshgozaran, C...
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