6650 search results - page 575 / 1330 » Mutating database queries |
259
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ICDT
2012
ACM
13 years 9 months ago
2012
ACM
A universal model of a database D and a set Σ of integrity constraints is a database that extends D, satisfies Σ, and is most general in the sense that it contains sound and co...
187
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VLDB
2007
ACM
16 years 1 months ago
2007
ACM
Intuitively, aggressive work sharing among concurrent queries in a database system should always improve performance by eliminating redundant computation or data accesses. We show...
183
Voted
ICDE
1998
IEEE
15 years 11 months ago
1998
IEEE
Consider a database that represents the location of moving objects, such as taxi-cabs (typical query: retrieve the cabs that are currently within 1 mile of 33 Michigan Ave., Chica...
251
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SIGMOD
1990
ACM
15 years 11 months ago
1990
ACM
In this work access support relataons are introduced as a means for optlmizmg query processing m object-oriented database systems The general idea 1s to mamtam redundant separate ...
179
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VLDB
1991
ACM
15 years 10 months ago
1991
ACM
A model capturing the data manipulation capabilities of a large class of methods in ohjectoriented databases is proposed and investsigated. The model uses a deterministic, paralle...