Title :
Minimality quality criterion evaluation for integrated schemas
Author :
Batista, Maria Da Conceição Moraes ; Salgado, Ana Carolina
Author_Institution :
Centre de Inf., Univ. Fed. de Pernambuco, Recife
Abstract :
Integrated access to distributed data is an important problem faced in scientific and commercial applications. A data integration system provides a unified view for users to submit queries over multiple autonomous data sources. The queries are processed over a global schema that offers an integrated view of the data sources. Much work has been done on query processing and choosing plans under cost criteria. However, not so much is known about incorporating information quality analysis into data integration systems, particularly in the integrated schema. In this work we present an approach of information quality analysis of schemas in data integration environments. We discuss the evaluation of schema quality focusing in the minimality aspect and define some schema transformations to be applied in order to improve schema design.
Keywords :
data handling; information management; query processing; data integration system; distributed data; information quality analysis; integrated access; minimality quality criterion evaluation; multiple autonomous data sources; Costs; Data analysis; Databases; Formal specifications; Information analysis; Information systems; Interleaved codes; Multidimensional systems; Process planning; Query processing;
Conference_Titel :
Digital Information Management, 2007. ICDIM '07. 2nd International Conference on
Conference_Location :
Lyon
Print_ISBN :
978-1-4244-1475-8
Electronic_ISBN :
978-1-4244-1476-5
DOI :
10.1109/ICDIM.2007.4444262