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VLDB
1995
ACM
155views Database» more  VLDB 1995»
9 years 5 months ago
Aggregate-Query Processing in Data Warehousing Environments
In this paper we introduce generalized projections (GPs), an extension of duplicateeliminating projections, that capture aggregations, groupbys, duplicate-eliminating projections ...
Ashish Gupta, Venky Harinarayan, Dallan Quass
VLDB
1995
ACM
86views Database» more  VLDB 1995»
9 years 5 months ago
Generalizing GlOSS to Vector-Space Databases and Broker Hierarchies
Luis Gravano, Hector Garcia-Molina
VLDB
1995
ACM
130views Database» more  VLDB 1995»
9 years 5 months ago
Improving Performance in Replicated Databases through Relaxed Coherency
Applications in finance and telecommunications (intelligent network, network management, mobile computing) cause renewed interest in distributed and replicated data management. Si...
Rainer Gallersdörfer, Matthias Nicola
VLDB
1995
ACM
129views Database» more  VLDB 1995»
9 years 5 months ago
A Cost Model for Clustered Object-Oriented Databases
Query processing is one of the most, critical issues in Object-Oriented DBMSs. Extensible opt,imizers with efficient, search strategies require a cost model to select the most eff...
Georges Gardarin, Jean-Robert Gruser, Zhao-Hui Tan...
VLDB
1995
ACM
97views Database» more  VLDB 1995»
9 years 5 months ago
Processing Object-Oriented Queries with Invertible Late Bound Functions
New demandsare put on query processing in Object-Oriented(00) databasesto provide efficient andrelationally completequery languages. A flexible 00 data model requires overloading ...
Staffan Flodin, Tore Risch
VLDB
1995
ACM
79views Database» more  VLDB 1995»
9 years 5 months ago
Schema and Database Evolution in the O2 Object Database System
Fabrizio Ferrandina, Thorsten Meyer, Roberto Zicar...
VLDB
1995
ACM
66views Database» more  VLDB 1995»
9 years 5 months ago
A Performance Evaluation of OID Mapping Techniques
In this paper, three techniques to implement logical OIDs are thoroughly evaluated: hashing, B-trees and a technique called direct mapping. Among these three techniques, direct ma...
André Eickler, Carsten Andreas Gerlhof, Don...
VLDB
1995
ACM
71views Database» more  VLDB 1995»
9 years 5 months ago
Database De-Centralization - A Practical Approach
We describe a scheme to fragment and distribute centralized databases. ’ The problem is motivated by trends towards down-sizing and reorganization, reflecting actual, often dist...
Tor Didriksen, César A. Galindo-Legaria, Ei...
VLDB
1995
ACM
76views Database» more  VLDB 1995»
9 years 5 months ago
Declustering Databases on Heterogeneous Disk Systems
Ling Tony Chen, Doron Rotem, Sridhar Seshadri
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