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» A Join Index for XML Data Warehouses
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CORR
2008
Springer
142views Education» more  CORR 2008»
10 years 2 months ago
A Join Index for XML Data Warehouses
XML data warehouses form an interesting basis for decision-support applications that exploit complex data. However, native-XML database management systems (DBMSs) currently bear l...
Hadj Mahboubi, Kamel Aouiche, Jérôme ...
DAWAK
2005
Springer
10 years 9 months ago
Automatic Selection of Bitmap Join Indexes in Data Warehouses
The queries deļ¬ned on data warehouses are complex and use several join operations that induce an expensive computational cost. This cost becomes even more prohibitive when querie...
Kamel Aouiche, Jérôme Darmont, Omar B...
SBBD
2001
119views Database» more  SBBD 2001»
10 years 5 months ago
The Dimension-Join: A New Index for Data Warehouses
There are several auxiliary pre-computed access structures that allow faster answers by reading less base data. Examples are materialized views, join indexes, B-tree and bitmap in...
Pedro Bizarro, Henrique Madeira
TKDE
2002
148views more  TKDE 2002»
10 years 3 months ago
Parallel Star Join + DataIndexes: Efficient Query Processing in Data Warehouses and OLAP
On-Line Analytical Processing (OLAP) refers to the technologies that allow users to efficiently retrieve data from the data warehouse for decision-support purposes. Data warehouses...
Anindya Datta, Debra E. VanderMeer, Krithi Ramamri...
VLDB
1998
ACM
123views Database» more  VLDB 1998»
10 years 8 months ago
Diag-Join: An Opportunistic Join Algorithm for 1:N Relationships
Time of creation is one of the predominant (often implicit) clustering strategies found not only in Data Warehouse systems: line items are created together with their correspondin...
Sven Helmer, Till Westmann, Guido Moerkotte
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