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VLDB
1991
ACM
14 years 1 months ago
1991
ACM
In this paper we present a technique to optimize queries on deductive databases that use aggregate operations such as min, max, and “largest Ic values.” Our approach is based ...
VLDB
1991
ACM
14 years 1 months ago
1991
ACM
This paper describesFido, a predictive cache [Palmer 19901that prefetchesby employing an associativememoryto recognizeaccesspatterns within a context over time. Repeatedtraining a...
VLDB
1991
ACM
14 years 1 months ago
1991
ACM
This paper presentsa version model which handlesdatabaseschemachangesandwhich takesevolution into account. Its originality is in allowing the development of partial schema version...
VLDB
1991
ACM
14 years 1 months ago
1991
ACM
This paper describes some of the concurrency control 1” lgorithms used in RdMVMS RdbIVMS uses the ,fac.ilities provided by the VMS lock manager in order to perform locking among...
VLDB
1991
ACM
14 years 1 months ago
1991
ACM
In order to cope efficiently with simple or complex queries as well as different application requirements (e.g., ad-hoc versus repetitive queries), a query optimizer ought to supp...