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DEBU
2000
13 years 8 months ago
2000
We classify data quality problems that are addressed by data cleaning and provide an overview of the main solution approaches. Data cleaning is especially required when integratin...
EDBT
2012
ACM
11 years 11 months ago
2012
ACM
In this paper we consider the problem of answering queries using views, with or without ontological constraints, which is important for data integration, query optimization, and d...
CAISE
2003
Springer
14 years 2 months ago
2003
Springer
Extraction-Transformation-Loading (ETL) tools are pieces of software responsible for the extraction of data from several sources, their cleansing, customization and insertion into ...
DMDW
2001
13 years 10 months ago
2001
Accurately estimating the cardinality of aggregate views is crucial for logical and physical design of data warehouses. While the warehouse is under development and data are not a...
ISTA
2007
13 years 10 months ago
2007
: With the ever-growing availability of so-called complex data, especially on the Web, decision-support systems such as data warehouses must store and process data that are not onl...