NDLI: Experimental evaluation of data warehouse configuration algorithms

Content Provider	IEEE Xplore Digital Library
Author	Ligoudistianos, S. Theodoratos, D. Sellis, T.
Copyright Year	1998
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece (Ligoudistianos, S.)
Abstract	A data warehouse (DW) can be seen as a set of materialized views defined over relations that are stored in remote heterogeneous database systems. When a query is posed to the DW, it is evaluated locally, using only the materialized views. The DW configuration problem is the problem of selecting an optimal set of views to materialize that answer a given set of queries. The objective is the minimization of the combination of the query evaluation and view maintenance costs. We report on the experimental evaluation of an exhaustive algorithm and we develop new greedy and heuristic algorithms that expand only a small fraction of the states produced by the exhaustive algorithm. The algorithms are described in terms of a state space search problem. Finally, we report on experimental results and discuss the observed behavior of the algorithms.
Starting Page	218
Ending Page	223
File Size	85271
Page Count	6
File Format	PDF
ISBN	0818683538
DOI	10.1109/DEXA.1998.707406
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-08-26
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Data warehouses Query processing State-space methods Cost function Computer science Heuristic algorithms Distributed databases Merging Multidimensional systems Search problems
Content Type	Text
Resource Type	Article

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