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» A Case for A Collaborative Query Management System
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EDBT
2012
ACM
308views Database» more  EDBT 2012»
13 years 1 days ago
Transactional stream processing
Many stream processing applications require access to a multitude of streaming as well as stored data sources. Yet there is no clear semantics for correct continuous query executi...
Irina Botan, Peter M. Fischer, Donald Kossmann, Ne...
STDBM
2004
Springer
143views Database» more  STDBM 2004»
15 years 3 months ago
Indexing Query Regions for Streaming Geospatial Data
This paper introduces the Dynamic Cascade Tree (DCT), a structure designed to index query regions on multi-dimensional data streams. The DCT is designed for a stream management sy...
Quinn Hart, Michael Gertz
ICDE
2008
IEEE
395views Database» more  ICDE 2008»
16 years 9 months ago
PermJoin: An Efficient Algorithm for Producing Early Results in Multi-join Query Plans
This paper introduces an efficient algorithm for Producing Early Results in Multi-join query plans (PermJoin, for short). While most previous research focuses only on the case of ...
Justin J. Levandoski, Mohamed E. Khalefa, Mohamed ...
GIS
2010
ACM
14 years 8 months ago
Querying the future of spatio-temporal objects
Since navigation systems and tracking devices are becoming ubiquitous in our daily life, the development of efficient methods for processing massive sets of mobile objects are of ...
Philip Schmiegelt, Bernhard Seeger
ICTAI
2009
IEEE
15 years 4 months ago
Managing Authorization Provenance: A Modal Logic Based Approach
Abstract—In distributed environments, access control decisions depend on statements of multiple agents rather than only one central trusted party. However, existing policy langua...
Jinwei Hu, Yan Zhang, Ruixuan Li, Zhengding Lu