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Chapter 5 Federated Query Processing [chapter]

Kemele M. Endris, Maria-Esther Vidal, Damien Graux
2020 Lecture Notes in Computer Science  
Federated query processing techniques provide a solution to scale up to large volumes of data distributed across multiple data sources.  ...  Federated query processing techniques resort to source descriptions to identify relevant data sources for a query, as well as to find efficient execution plans that minimize the total execution time of  ...  Federated query processing systems fall in the second and fourth type of integration system when the data sources are autonomous.  ... 
doi:10.1007/978-3-030-53199-7_5 fatcat:o5wzimjwbzantbnbmvmjujoine

Evolution of Query Optimization Methods [chapter]

Abdelkader Hameurlain, Franck Morvan
2009 Lecture Notes in Computer Science  
In this paper, we try to describe synthetically the evolution of query optimization methods from uniprocessor relational database systems to data Grid systems through parallel, distributed and data integration  ...  Query optimization is the most critical phase in query processing.  ...  The rest of this sub-section tries to provide an overview of query processing and optimization in data grid systems.  ... 
doi:10.1007/978-3-642-03722-1_9 fatcat:uzhmfy5iq5gajodcpj6ixpj5qy

Evolution of data management systems

Abdelkader Hameurlain
2012 Proceedings of the 14th International Conference on Information Integration and Web-based Applications & Services - IIWAS '12  
4.2 Query Optimization Methods Type of Query Optimization Methods [Cole 94]: <Static, Dynamic> Principle of Dynamic Query Optimization [Hel 00]: S1: Sub-optimality Detection of execution plans  ...  S2: Modification of Sub-optimal Exec.  ... 
doi:10.1145/2428736.2428738 dblp:conf/iiwas/Hameurlain12 fatcat:ayoxhgsd7nfcrk6pbph3s6psy4

XML based Mediated Query Re-writing Framework

Jahangir khan, Muhammad Ahmed, Muhammad Khalid khan
2011 International Journal of Computer Applications  
However, Query Optimization/Management is the major area of research in XML based integration systems.  ...  Focus is to present a solution to the problem of query optimization in XML-based data integration in hybrid peer to peer data management environment.  ...  ACKNOWLEDGMENTS Our thanks to the IJCA who have given the opportunity for exploring our ideas and research in the researcher platform.  ... 
doi:10.5120/1769-2427 fatcat:szghb74re5glxeywghqkhzz2um

Dynamic Query Processing for P2P Data Services in the Cloud [chapter]

Pawel Jurczyk, Li Xiong
2009 Lecture Notes in Computer Science  
The query processing is capable of fully benefiting from all the distributed resources to minimize the query response time and maximize system throughput.  ...  Data-as-a-service enables access to a wealth of data across distributed and heterogeneous data sources in the cloud.  ...  The focus of these solutions, however, is on data and processing distribution rather than on data integration.  ... 
doi:10.1007/978-3-642-03573-9_34 fatcat:c6vnebikhjgxzatgpmrrbi2usa

Scalable view expansion in a peer mediator system

T. Katchaounov, V. Josifovski, T. Risch
2003 Eighth International Conference on Database Systems for Advanced Applications, 2003. (DASFAA 2003). Proceedings.  
To integrate many data sources we use a peer mediator framework where views defined in the peers are logically composed in terms of each other.  ...  The mediators locally decompose queries into query fragments and submit them to the data sources for processing.  ...  This may result in a high cost of getting the cost. Finally due to incorrect cost estimates typical in a distributed mediator system the optimizer might still produce sub-optimal QEPs.  ... 
doi:10.1109/dasfaa.2003.1192374 dblp:conf/dasfaa/KatchaounovJR03 fatcat:fumxrxqkebhp3nmzpoaxa5sbe4

Sharing Data on the Grid using Ontologies and distributed SPARQL Queries

Andreas Langegger, Martin Blochl, Wolfram Woss
2007 Database and Expert Systems Applications  
In fact, most RDF triple stores are based on relational database systems. In this paper, several concepts are proposed to enable the integration of heterogeneous, distributed data sources with SPARQL.  ...  For a large-scale data integration, which is the scope of a middleware developed within the Austrian Grid project, it is necessary to execute queries on distributed data nodes.  ...  Query Processing Because relational database systems are the most commonly used information systems, many data integration systems are based on relational algebra.  ... 
doi:10.1109/dexa.2007.4312934 fatcat:zd5fymlwtncupenp5wc2plw6y4

Sharing Data on the Grid using Ontologies and distributed SPARQL Queries

Andreas Langegger, Martin Blochl, Wolfram Woss
2007 18th International Conference on Database and Expert Systems Applications (DEXA 2007)  
In fact, most RDF triple stores are based on relational database systems. In this paper, several concepts are proposed to enable the integration of heterogeneous, distributed data sources with SPARQL.  ...  For a large-scale data integration, which is the scope of a middleware developed within the Austrian Grid project, it is necessary to execute queries on distributed data nodes.  ...  Query Processing Because relational database systems are the most commonly used information systems, many data integration systems are based on relational algebra.  ... 
doi:10.1109/dexa.2007.129 dblp:conf/dexaw/LangeggerBW07 fatcat:oxeiehz73bhgvofdtmzrzc5ydu

Building Dynamic Market Places Using HyperQueries [chapter]

Christian Wiesner, Peter Winklhofer, Alfons Kemper
2002 Lecture Notes in Computer Science  
Building a scalable virtual B2B market place with hundreds or thousands participants requires highly flexible, distributed query processing capabilities.  ...  HyperQueries are essentially query evaluation sub-plans "sitting behind" hyperlinks.  ...  In traditional distributed query processing systems such a query can only be executed if a global schema exists or all local databases are replicated at the market place.  ... 
doi:10.1007/3-540-45876-x_51 fatcat:4rwdtppt3vbkbeubaw7fht52mi

On Using Distributed Extended XQuery for Web Data Sources as Services [chapter]

Muhammad Intizar Ali, Reinhard Pichler, Hong-Linh Truong, Schahram Dustdar
2009 Lecture Notes in Computer Science  
In this system demo, we show how DeXIN can provide an optimized, distributed and parallel query processing and data integration at the same time.  ...  DeXIN (Distributed extended XQuery for data INtegration) integrates multiple, heterogeneous, highly distributed and rapidly changing web data sources in different formats, e.g.  ...  Distributed, parallel query execution and avoiding data transformation make it a strong tool for data integration and optimized query execution in distributed and peer to peer networks.  ... 
doi:10.1007/978-3-642-02818-2_47 fatcat:vum25azu25aizbyh2wgkp7wbzq

Machine Learning for Database Management Systems

Sai Tanishq N
2020 International Journal Of Engineering And Computer Science  
Bearing this in mind, this research takes an in-depth look into the of the problem- solving potential of ML in the area of Database Management Systems (DBMS).  ...  Machine Learning (ML) is transforming the world with research breakthroughs that are leading to the progress of every field. We are living in an era of data explosion.  ...  ML models in SageDB are optimized to capture the empirical data distribution of the data and not optimized for the ability to generalize to unseen data.  ... 
doi:10.18535/ijecs/v9i08.4520 fatcat:rqs2wvlslzegxkg6skltnmqyl4

Query Optimization for Databases in Cloud Environment: A Survey

Archana Bachhav, Vilas Kharat, Madhukar Shelar
2017 International Journal of Database Theory and Application  
To improve the performance in the cloud requires the optimization of data processing time.  ...  Either use centralized or distributed platforms with traditional SQL or MapReduce technique query optimization is obligatory to enhance high performance in large scale data systems.  ...  All similar query plans are allocated to the same group of µengines, sub-queries of different queries are placed together for processing in order to share data across the sub-queries. µengine processes  ... 
doi:10.14257/ijdta.2017.10.6.01 fatcat:6wdddszmffd7pomsn3bhtfhyim

A mobile agent approach for global database constraint checking

Praveen Madiraju, Rajshekhar Sunderraman
2004 Proceedings of the 2004 ACM symposium on Applied computing - SAC '04  
Integrity constraints are valuable tools for enforcing consistency of data in a database. Global integrity constraints ensure integrity and consistency of data spanning multiple databases.  ...  Recent research has considered using mobile agents for global querying, but none of the literature so far has looked in to the aspect of using mobile agents for global constraint checking.  ...  One major advantage of data distribution is each site can process it's own data with some degree of autonomy and user's can be provided with a single global view of the data.  ... 
doi:10.1145/967900.968043 dblp:conf/sac/MadirajuS04 fatcat:tyd4bf4va5hfnhqf5xkmybwisu

Configurable data integration middleware system

Alvaro C. P. Barbosa, Fábio A.M. Porto, Rubens Nascimento Melo
2002 Journal of the Brazilian Computer Society  
This paper presents a new approach for generating configured and flexible middleware systems for integration of heterogeneous and distributed data.  ...  The objective is to build tailored integration middleware systems, using a minimum number of components.  ...  It produces a global query execution plan made of data sources sub-queries and global integration operations.  ... 
doi:10.1590/s0104-65002002000200002 fatcat:5p2wtclvbfeafkjjmopiubtxte

ObjectGlobe: Ubiquitous query processing on the Internet

R. Braumandl, M. Keidl, A. Kemper, D. Kossmann, A. Kreutz, S. Seltzsam, K. Stocker
2001 The VLDB journal  
The goal of the ObjectGlobe project is to establish an open marketplace in which data and query processing capabilities can be distributed and used by any kind of Internet application.  ...  ., B2B and B2C market places, to be able to integrate data and data processing operations of a large number of participants.  ...  Junglee [GHR97] follows a data warehousing approach in order to integrate Internet data for query processing.  ... 
doi:10.1007/s007780100043 fatcat:fkqrb2snf5filmcaf4s4ujkvlu
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