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- ÉditeurLAP LAMBERT Academic Publishing
- Date d'édition2017
- ISBN 10 3330079266
- ISBN 13 9783330079267
- ReliureBroché
- Langueanglais
- Nombre de pages52
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Performance Evaluation and Optimization of Queries in Multi Databases
Edité par
LAP LAMBERT Academic Publishing Apr 2017, 2017
ISBN 10 : 3330079266
ISBN 13 : 9783330079267
Neuf
Taschenbuch
Vendeur : BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Allemagne
Évaluation du vendeur 5 sur 5 étoiles
Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Modern database systems use a query optimizer to identify query plan to execute declarative SQL queries. Optimization is a mandatory exercise since the difference between the cost of the best plan and a random choice could be in orders of magnitude. The role of query optimizers is especially critical for the decision-support queries featured in data warehousing and data mining applications. For a query on a given database and system configuration, the optimizer's plan choice is primarily a function of the selectivities of the base relations participating in the query. In this chapter, it has been projected towards the cost of sub-query operations on the various sites, as well as the benefits achieved in the range of thirty to forty percent for various sub-operations like selection, projection and join. 52 pp. Englisch. N° de réf. du vendeur 9783330079267
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Performance Evaluation and Optimization of Queries in Multi Databases
Edité par
LAP LAMBERT Academic Publishing, 2017
ISBN 10 : 3330079266
ISBN 13 : 9783330079267
Neuf
Taschenbuch
Vendeur : AHA-BUCH GmbH, Einbeck, Allemagne
Évaluation du vendeur 5 sur 5 étoiles
Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Modern database systems use a query optimizer to identify query plan to execute declarative SQL queries. Optimization is a mandatory exercise since the difference between the cost of the best plan and a random choice could be in orders of magnitude. The role of query optimizers is especially critical for the decision-support queries featured in data warehousing and data mining applications. For a query on a given database and system configuration, the optimizer's plan choice is primarily a function of the selectivities of the base relations participating in the query. In this chapter, it has been projected towards the cost of sub-query operations on the various sites, as well as the benefits achieved in the range of thirty to forty percent for various sub-operations like selection, projection and join. N° de réf. du vendeur 9783330079267
Quantité disponible : 1 disponible(s)
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Performance Evaluation and Optimization of Queries in Multi Databases
Edité par
LAP LAMBERT Academic Publishing, 2017
ISBN 10 : 3330079266
ISBN 13 : 9783330079267
Neuf
Paperback
Vendeur : Revaluation Books, Exeter, Royaume-Uni
Évaluation du vendeur 5 sur 5 étoiles
Paperback. Etat : Brand New. 52 pages. 8.66x5.91x0.12 inches. In Stock. N° de réf. du vendeur 3330079266
Quantité disponible : 1 disponible(s)
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Performance Evaluation and Optimization of Queries in Multi Databases
Edité par
LAP LAMBERT Academic Publishing, 2017
ISBN 10 : 3330079266
ISBN 13 : 9783330079267
Neuf
Couverture souple
Vendeur : moluna, Greven, Allemagne
Évaluation du vendeur 5 sur 5 étoiles
Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Mishra Sambit KumarSambit Kumar Mishra is presently working as a Professor (Computer Sc.&Engg.) & Head (R&D) in Gandhi Institute for Education & Technology, Bhubaneswar, Odisha. He is member of Editorial Board of several Journals lik. N° de réf. du vendeur 151236826
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