1860 search results - page 76 / 372 » A Model of Queries for Object-Oriented Databases |
129
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ICDT
2010
ACM
15 years 2 months ago
2010
ACM
When a query is evaluated under bag semantics, each answer is returned as many times as it has derivations. Bag semantics has long been recognized as important, especially when ag...
129
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EDBT
2011
ACM
14 years 4 months ago
2011
ACM
A question that database administrators (DBAs) routinely need to answer is how long a batch query workload will take to complete. This question arises, for example, while planning...
113
Voted
ICEBE
2005
IEEE
15 years 6 months ago
2005
IEEE
Over a traditional Database Management System (DBMS), the answer to an aggregate query is usually much smaller than the answer to a similar nonaggregate query. Therefore, we call ...
88
Voted
EDBT
2009
ACM
15 years 4 months ago
2009
ACM
We investigate the problem of refining SQL queries to satisfy cardinality constraints on the query result. This has applications to the many/few answers problems often faced by da...
177
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SIGMOD
2005
ACM
16 years 22 days ago
2005
ACM
A defining characteristic of continuous queries over on-line data streams, possibly bounded by sliding windows, is the potentially infinite and time-evolving nature of their input...