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DMDW
2003
134views Management» more  DMDW 2003»
9 years 2 months ago
Using Design Guidelines to Improve Data Warehouse Logical Design
Data Warehouse-(DW) logical design often start with a conceptual schema and then generates relational structures. Applying this approach implies to cope with two main aspects: (i) ...
Verónika Peralta, Raul Ruggia
DMDW
2003
131views Management» more  DMDW 2003»
9 years 2 months ago
Storage Layout and I/O Performance in Data Warehouses
Defining data placement and allocation in the disk subsystem can have a significant impact on data warehouse performance. However, our experiences with data warehouse implementatio...
Matthias Nicola, Haider Rizvi
DMDW
2003
269views Management» more  DMDW 2003»
9 years 2 months ago
CASME: A CASE Tool for Spatial Data Marts Design and Generation
Geographic Information Systems (GIS) showed their insufficiencies in front of complex requests for decision-makers. Resulting of the association of the databases and the decision-m...
Hajer Baazaoui Zghal, Sami Faïz, Henda Hajjam...
DMDW
2003
144views Management» more  DMDW 2003»
9 years 2 months ago
Best Practice for Implementing a Data Warehouse: A Review for Strategic Alignment
A review of literature pertaining to data warehouse implementations over the last eight years has been undertaken. It was found that the views of data warehouse practitioners in pa...
Rob Weir, Taoxin Peng, Jon M. Kerridge
DMDW
2001
232views Management» more  DMDW 2001»
9 years 2 months ago
Towards Data Warehouse Quality Metrics
Organizations are adopting datawarehouses to manage information efficiently as "the" main organizational asset. It is essential that we can assure the information qualit...
Coral Calero, Mario Piattini, Carolina Pascual, Ma...
DMDW
2001
127views Management» more  DMDW 2001»
9 years 2 months ago
MAC: Conceptual data modeling for OLAP
In this paper we address the issue of conceptual modeling of data used in multidimensional analysis. We view the problem from the end-user point of view and we describe a set of r...
Aris Tsois, Nikos Karayannidis, Timos K. Sellis
DMDW
2001
307views Management» more  DMDW 2001»
9 years 2 months ago
An Analysis of Many-to-Many Relationships Between Fact and Dimension Tables in Dimensional Modeling
Star schema, which maintains one-to-many relationships between dimensions and a fact table, is widely accepted as the most viable data representation for dimensional analysis. Rea...
Il-Yeol Song, William Rowen, Carl Medsker, Edward ...
DMDW
2001
194views Management» more  DMDW 2001»
9 years 2 months ago
Logical Multidimensional Database Design for Ragged and Unbalanced Aggregation
Research on logical design of OLAP cubes has tended to assume that the rollup hierarchy in a cube dimension takes the form of a balanced tree. However, experience from industry in...
Tapio Niemi, Jyrki Nummenmaa, Peter Thanisch
DMDW
2001
106views Management» more  DMDW 2001»
9 years 2 months ago
SISYPHUS: A Chunk-Based Storage Manager for OLAP Cubes
In this paper, we present SISYPHUS, a storage manager for data cubes that provides an efficient physical base for performing OLAP operations. On-Line Analytical Processing (OLAP) ...
Nikos Karayannidis, Timos K. Sellis
DMDW
2001
162views Management» more  DMDW 2001»
9 years 2 months ago
A Data Warehouse Architecture for Meteo Swiss: An Experience Report
In this experience report we consider some issues in the development of a data warehouse for meteorological and climatology data at MeteoSwiss. The paper describes the meteorologi...
Christian Häberli, Dimitris Tombros
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