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IQIS
2007
ACM
14 years 9 days ago
Towards a Benchmark for ETL Workflows
Extraction–Transform–Load (ETL) processes comprise complex data workflows, which are responsible for the maintenance of a Data Warehouse. Their practical importance is denoted...
Panos Vassiliadis, Anastasios Karagiannis, Vasilik...
DOLAP
2003
ACM
14 years 4 months ago
Hierarchical dwarfs for the rollup cube
The data cube operator exemplifies two of the most important aspects of OLAP queries: aggregation and dimension hierarchies. In earlier work we presented Dwarf, a highly compress...
Yannis Sismanis, Antonios Deligiannakis, Yannis Ko...
VLDB
1998
ACM
115views Database» more  VLDB 1998»
14 years 3 months ago
Bank of America Case Study: The Information Currency Advantage
This paper describes the external forces that motivate financial institutions to collect, aggregate, analyze, and mine data so that it can be transformed into information, one of ...
Felipe Cariño, Mark Jahnke
DOLAP
2000
ACM
14 years 3 months ago
CUBIST: A New Algorithm For Improving the Performance of Ad-hoc OLAP Queries
Being able to efficiently answer arbitrary OLAP queries that aggregate along any combination of dimensions over numerical and categorical attributes has been a continued, major co...
Lixin Fu, Joachim Hammer
VLDB
2001
ACM
131views Database» more  VLDB 2001»
14 years 3 months ago
Change-Centric Management of Versions in an XML Warehouse
: We present a change-centric method to manage versions in a Web WareHouse of XML data. The starting points is a sequence of snapshots of XML documents we obtain from the web. By r...
Amélie Marian, Serge Abiteboul, Gregory Cob...