Discovering Quality Knowledge from Relational Databases

Discovering Quality Knowledge from Relational Databases

M. Mehdi Owrang O.
DOI: 10.4018/978-1-60566-058-5.ch018
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Current database technology involves processing a large volume of data in order to discover new knowledge. However, knowledge discovery on just the most detailed and recent data does not reveal the long-term trends. Relational databases create new types of problems for knowledge discovery since they are normalized to avoid redundancies and update anomalies, which make them unsuitable for knowledge discovery. A key issue in any discovery system is to ensure the consistency, accuracy, and completeness of the discovered knowledge. We describe the aforementioned problems associated with the quality of the discovered knowledge and provide some solutions to avoid them.

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