Results 31 to 40 of about 21,453,969 (390)

Solutions for improving data extraction from virtual data warehouses [PDF]

open access: yesDatabase Systems Journal, 2010
The data warehousing project’s team is always confronted with low performance in data extraction. In a Business Intelligence environment this problem can be critical because the data displayed are no longer available for taking decisions, so the project ...
Adela BARA
doaj  

Photonic Switching for Data Center Applications

open access: yesIEEE Photonics Journal, 2011
Switching fabrics in data centers that rely on traditional electrical switches face scaling issues in terms of power consumption. Fast optical switches based on a silicon photonics platform can enable the high port speed and high interconnection density ...
L. Chen   +3 more
doaj   +1 more source

Learning Evaluation Effectiveness Through Dashboard of Knowledge Using Dimensions of Multi-Criteria of WELS

open access: yesIEEE Access, 2020
A Discussion Forum is one component of the learning media in a Learning Management System. There is much information and knowledge that are discussed among a lecturer and students in forums as a part of the learning process.
Reina Setiawan   +3 more
doaj   +1 more source

A Conceptual Metadata Framework for Spatial Data Warehouse [PDF]

open access: yesInternational Journal of Data Mining & Knowledge Management Process (IJDKP) Vol.3, No.3, May 2013, 2013
Metadata represents the information about data to be stored in Data Warehouses.It is a mandatory element of Data Warehouse to build an efficient Data Warehouse.Metadata helps in data integration,lineage,data quality and populating transformed data into data warehouse.Spatial data warehouses are based on spatial data mostly collected from Geographical ...
arxiv   +1 more source

Clustering-Based Materialized View Selection in Data Warehouses

open access: yes, 2006
Materialized view selection is a non-trivial task. Hence, its complexity must be reduced. A judicious choice of views must be cost-driven and influenced by the workload experienced by the system.
A. Shukla   +8 more
core   +4 more sources

Integrating data warehouses with web data : a survey [PDF]

open access: yes, 2008
This paper surveys the most relevant research on combining Data Warehouse (DW) and Web data. It studies the XML technologies that are currently being used to integrate, store, query, and retrieve Web data and their application to DWs. The paper reviews
Aramburu Cabo, María José   +3 more
core   +2 more sources

Data Warehouse Refreshment

open access: yes, 2007
In the early stages of a data warehouse project, the designers/administrators have to come up with a decision concerning the design and deployment of the back-stage architecture. The possible options are (a) the usage of a commercial ETL tool, or (b) the development of an in-house ETL prototype. Both cases have advantages and disadvantages. However, in
Simitsis, Alkis   +3 more
openaire   +3 more sources

Tools for data warehouse quality [PDF]

open access: yesProceedings. Tenth International Conference on Scientific and Statistical Database Management (Cat. No.98TB100243), 2002
We show three interrelated tools intended to improve different aspects of the quality of data warehouse solutions. Firstly, the deductive object manager ConceptBase is intended to enrich the semantics of data warehouse solutions by including an explicit enterprise-centered concept of quality.
Gebhardt, M.   +4 more
openaire   +4 more sources

Building Data Warehouses Using The Enterprise Modeling Framework [PDF]

open access: yes, 2004
Tlds paper proposes an enterprise modeling framework for the deployment of data warehouses. The framework provides the information roadmap coordinating source data and different data warehouses across the business enterprise.
Chan, Joseph O.
core   +1 more source

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