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» Hypothetical Queries in an OLAP Environment
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DOLAP
1999
ACM
13 years 9 months ago
Characterization of Hierarchies and Some Operators in OLAP Environment
Recently numerous proposals for modelling and querying Multidimensional Databases (MDDB) are proposed. Among the still open problems there is a rigorous classification of the diff...
Elaheh Pourabbas, Maurizio Rafanelli
ICDIM
2010
IEEE
13 years 3 months ago
Data mining and automatic OLAP schema generation
Data mining aims at extraction of previously unidentified information from large databases. It can be viewed as an automated application of algorithms to discover hidden patterns a...
Muhammad Usman, Sohail Asghar, Simon Fong
SIGMOD
1999
ACM
181views Database» more  SIGMOD 1999»
13 years 9 months ago
Approximate Computation of Multidimensional Aggregates of Sparse Data Using Wavelets
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
Jeffrey Scott Vitter, Min Wang
VLDB
2001
ACM
115views Database» more  VLDB 2001»
13 years 9 months ago
Dynamic Update Cube for Range-sum Queries
A range-sum query is very popular and becomes important in finding trends and in discovering relationships between attributes in diverse database applications. It sums over the se...
Seok-Ju Chun, Chin-Wan Chung, Ju-Hong Lee, Seok-Ly...
SIGMOD
2003
ACM
196views Database» more  SIGMOD 2003»
14 years 5 months ago
Spreadsheets in RDBMS for OLAP
One of the critical deficiencies of SQL is lack of support for ndimensional array-based computations which are frequent in OLAP environments. Relational OLAP (ROLAP) applications ...
Andrew Witkowski, Srikanth Bellamkonda, Tolga Bozk...