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» Modeling and Querying Semi-structured Data
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TKDE
2012
487views Formal Methods» more  TKDE 2012»
13 years 6 months ago
Query Planning for Continuous Aggregation Queries over a Network of Data Aggregators
—Continuous queries are used to monitor changes to time varying data and to provide results useful for online decision making. Typically a user desires to obtain the value of som...
Rajeev Gupta, Krithi Ramamritham
132
Voted
ER
2004
Springer
107views Database» more  ER 2004»
15 years 9 months ago
A Scaleless Data Model for Direct and Progressive Spatial Query Processing
A progressive spatial query retrieves spatial data based on previous queries (e.g., to fetch data in a more restricted area with higher resolution). A direct query, on the other si...
Sai Sun, Sham Prasher, Xiaofang Zhou
151
Voted
ICDE
2011
IEEE
220views Database» more  ICDE 2011»
14 years 7 months ago
Generating test data for killing SQL mutants: A constraint-based approach
—Complex SQL queries are widely used today, but it is rather difficult to check if a complex query has been written correctly. Formal verification based on comparing a specifi...
Shetal Shah, S. Sudarshan, Suhas Kajbaje, Sandeep ...
229
Voted
SIGMOD
2006
ACM
123views Database» more  SIGMOD 2006»
16 years 3 months ago
Exploiting predicate-window semantics over data streams
The continuous sliding-window query model is used widely in data stream management systems where the focus of a continuous query is limited to a set of the most recent tuples. In ...
Thanaa M. Ghanem, Walid G. Aref, Ahmed K. Elmagarm...
110
Voted
MMM
2003
Springer
152views Multimedia» more  MMM 2003»
15 years 9 months ago
Modeling Video Data for Content Based Queries: Extending the DISIMA Image Data Model
Lei Chen 0002, M. Tamer Özsu, Vincent Oria