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Digging Database Statistics and Costs Parameters for Distributed Query Processing

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Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 2888))

Abstract

Cost parameters and database statistics are the basis of query optimization techniques. However, in distributed and heterogeneous database systems, acquiring and treating information in order to help the optimization process are often tasks of a global query processor, which adapts its functionalities to a specific system architecture. Moreover, this acquisition process involves a large number of parameters and requires customized methods to retrieve data from specific sources. DIG (Distributed Information Gatherer) is a provider of data statistics and query costs that, through an independent and flexible service, aims to support global query optimization processing in distributed and heterogeneous database systems over autonomous data sources. We have developed a DIG prototype and experimented it with specific wrappers for a query middleware on both semi-structured data sources and an object DBMS.

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© 2003 Springer-Verlag Berlin Heidelberg

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Ruberg, N., Ruberg, G., Mattoso, M. (2003). Digging Database Statistics and Costs Parameters for Distributed Query Processing. In: Meersman, R., Tari, Z., Schmidt, D.C. (eds) On The Move to Meaningful Internet Systems 2003: CoopIS, DOA, and ODBASE. OTM 2003. Lecture Notes in Computer Science, vol 2888. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-39964-3_20

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  • DOI: https://doi.org/10.1007/978-3-540-39964-3_20

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-20498-5

  • Online ISBN: 978-3-540-39964-3

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