Data Cleaning: A Practical Perspective 1st Edition

Ebook Details

Authors

Venkatesh Ganti, Anish Das Sarma

Year 2013
Pages 86
Publisher Morgan &amp
Language en
ISBN 9781608456772
File Size 678.96 KB
File Format PDF
Download Counter 213
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Ebook Description

Data warehouses consolidate various activities of a business and often form the backbone for generating reports that support important business decisions. Errors in data tend to creep in for a variety of reasons. Some of these reasons include errors during input data collection and errors while merging data collected independently across different databases. These errors in data warehouses often result in erroneous upstream reports, and could impact business decisions negatively. Therefore, one of the critical challenges while maintaining large data warehouses is that of ensuring the quality of data in the data warehouse remains high. The process of maintaining high data quality is commonly referred to as data cleaning.