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Schema mapping and query reformulation in peer-to-peer XML data integration system

Tadeusz Pankowski
2009 Control and Cybernetics  
We focus on defining and using mappings, schema constraints, and query reformulation in such scenario.  ...  In this setting each peer stores schema of its local data, mappings between the schema and schemas of some other peers (peer's partners), and schema constraints.  ...  Acknowledgment The work was supported in part by the Polish Ministry of Science and Higher Education under Grant N516 3695/36.  ... 
dblp:journals/control/Pankowski09 fatcat:3z276sbvuzhxffak4rx54xdj3q

Efficient query reformulation in peer data management systems

Igor Tatarinov, Alon Halevy
2004 Proceedings of the 2004 ACM SIGMOD international conference on Management of data - SIGMOD '04  
To enable our optimizations, we developed practical algorithms, of independent interest, for checking containment and minimization of XML queries, and for composing XML mappings.  ...  By traversing semantic paths of mappings, a query over one peer can obtain relevant data from any reachable peer in the network.  ...  We began with 10 of the schemas in that site, and by adding structure variations on them, we created schemas for 27 peers.  ... 
doi:10.1145/1007568.1007629 dblp:conf/sigmod/TatarinovH04 fatcat:ngbodcqel5hjzdiolixjjn6ky4

XML based Mediated Query Re-writing Framework

Jahangir khan, Muhammad Ahmed, Muhammad Khalid khan
2011 International Journal of Computer Applications  
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.  ...  However, Query Optimization/Management is the major area of research in XML based integration systems.  ...  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

The Piazza Peer Data Management System

A.Y. Halevy, Z.G. Ives, J. Madhavan, P. Mork, D. Suciu, I. Tatarinov
2004 IEEE Transactions on Knowledge and Data Engineering  
PDMSs represent a natural step beyond data integration systems, replacing their single logical schema with an interlinked collection of semantic mappings between peers' individual schemas.  ...  PDMSs represent a natural step beyond data integration systems, replacing their single logical schema with an interlinked collection of semantic mappings between peers' individual schemas.  ...  ACKNOWLEDGMENTS This work was funded in part by US National Science Foundation ITR grants IIS-0205635 and IIS-9985114 and a gift from Microsoft Research.  ... 
doi:10.1109/tkde.2004.1318562 fatcat:jbp5xpw7gveqldv2elpfefpjbu

XML data integration in SixP2P

Tadeusz Pankowski
2008 Proceedings of the 2008 international workshop on Data management in peer-to-peer systems - DaMaP '08  
We focus on defining and using mappings, schema constraints, query propagation across the P2P system, and query reformulation in such scenario.  ...  In such setting each peer stores schema of its local data, mappings between the schema and schemas of some other peers (peer's partners), and schema constraints.  ...  CONCLUSION The paper presents a novel method for schema mapping and query reformulation in XML data integration systems in P2P environment.  ... 
doi:10.1145/1379350.1379353 dblp:conf/edbt/Pankowski08 fatcat:newkqjroabhmpld2asirxea2xy

P2P Schema-Mapping over Network-bound XML Data

Carmela Comito, Domenico Talia
2008 2008 Fourth International Conference on Semantics, Knowledge and Grid  
We propose a query reformulation algorithm to combine and query distributed XML databases through a decentralized point-to-point mediation process among the different data sources by using P2P schema mappings  ...  The rise in availability of web-based data sources has led to new challenges in data integration systems for obtaining decentralized, wide-scale sharing of data preserving semantics.  ...  The data integration model we propose is indeed based on path-topath mappings expressed in the XPath [10] query language, assuming XML Schema as the data model for XML sources.  ... 
doi:10.1109/skg.2008.30 dblp:conf/skg/ComitoT08 fatcat:kuojgzvfhbh6fanuluptpygiki

P2P schema-mapping over network-bound XML data

Carmela Comito, Domenico Talia
2010 Concurrency and Computation  
We propose a query reformulation algorithm to combine and query distributed XML databases through a decentralized point-to-point mediation process among the different data sources by using P2P schema mappings  ...  The rise in availability of web-based data sources has led to new challenges in data integration systems for obtaining decentralized, wide-scale sharing of data preserving semantics.  ...  The data integration model we propose is indeed based on path-topath mappings expressed in the XPath [10] query language, assuming XML Schema as the data model for XML sources.  ... 
doi:10.1002/cpe.1626 fatcat:j26c7367kbhb5opo54o5te4cqi

Peer-to-Peer Semantic Integration of XML and RDF Data Sources [chapter]

Isabel F. Cruz, Huiyong Xiao, Feihong Hsu
2005 Lecture Notes in Computer Science  
Peer-to-Peer (P2P) data management systems combine traditional schema-based integration techniques with the P2P infrastructure.  ...  In this paper, we propose a P2P data management framework named PEPSINT that semantically integrates heterogeneous XML and RDF data sources, using a hybrid architecture and a global-as-view approach.  ...  schema peer i mapping table XML to RDF wrapper Query processing in data-integration fashion Query processing in hybrid P2P fashion Mapping process Q1 Q2n' Q2i' Q2 Q11' Q1i  ... 
doi:10.1007/11574781_10 fatcat:febuyi4ix5ez5ej2scaelhz5iq

Collaborative Business Intelligence [chapter]

Stefano Rizzi
2012 Lecture Notes in Business Information Processing  
, federative approaches, where the integration is virtual and based on a global schema, and peer-to-peer approaches, that do not rely on a global schema to integrate the component data warehouses.  ...  Then we outline a new peer-to-peer framework, called Business Intelligence Network, where peers expose querying functionalities aimed at sharing business information for the decision-making process.  ...  As in the case of data integration systems, in a PDMS data remain at the sources and queries processing entails query reformulation over the peer schemata.  ... 
doi:10.1007/978-3-642-27358-2_9 fatcat:dcxgdkaz2rdm7edfac5tcjrc4i

The Data Integration Research Group at UFPE

Ana Carolina Salgado, Bernadette Farias Lóscio, Maria da Conceição Moraes Batista, Rosalie Barreto Belian, Carlos Eduardo S. Pires, Damires Souza
2011 Journal of Information and Data Management  
Data Integration settings concern, for instance, mediator-based integration systems and P2P ones (named Peer Data Management Systems).  ...  In these settings, users pose their queries without having to spend time in searching the set of distributed data sources individually.  ...  sources, data, schemas and schema mappings (or correspondences) to improve the query reformulation process; and (v) the use of semantics to help clustering similar data sources.  ... 
dblp:journals/jidm/SalgadoLBBPS11 fatcat:b4st7ewl5nbunbbsllgr6enlai

Semantic-Based Query Routing and Heterogeneous Data Integration in Peer-to-Peer Semantic Link Networks [chapter]

Hai Zhuge, Jie Liu, Liang Feng, Chao He
2004 Lecture Notes in Computer Science  
algorithms for query reformulation and heterogeneous data integration.  ...  Second, it considers not only node but also structure in measuring the similarity between schemas so as to efficiently and accurately forward queries to relevant peers.  ...  The research work was supported by the National Grand Fundamental Research 973 Program of China and the National Science Foundation.  ... 
doi:10.1007/978-3-540-30145-5_6 fatcat:n75cw3pe2vemladmic3qn6j5ra

The Piazza peer data management project

Igor Tatarinov, Peter Mork, Zachary Ives, Jayant Madhavan, Alon Halevy, Dan Suciu, Nilesh Dalvi, Xin (Luna) Dong, Yana Kadiyska, Gerome Miklau
2003 SIGMOD record  
Then, users formulate queries over their preferred schema, and a query answering system expands recursively any mappings relevant to the query, retrieving data from other peers.  ...  Piazza assumes the participants to be interested in sharing data, and willing to define pairwise mappings between their schemas.  ...  The implemented Piazza system is based on XML: peer schemas are defined in XML Schema, queries and mappings are specified in an XQuerybased language.  ... 
doi:10.1145/945721.945732 fatcat:im52arugnzarjdnakkrkroeoza

XPeer : A Self-Organizing XML P2P Database System [chapter]

Carlo Sartiani, Paolo Manghi, Giorgio Ghelli, Giovanni Conforti
2004 Lecture Notes in Computer Science  
The system allows users to share XML data without significant human intervention, and to pose XQuery FLWR queries against them.The proposed system can be used in any application field, being a general  ...  This paper describes XPeer, a zero-administration system for sharing and querying XML data.  ...  Moreover, the set of peer descriptions of a given system is sparse, i.e., a peer schema is mapped into a few other schemas, in order to decrease the efforts required for schema integration, and to simplify  ... 
doi:10.1007/978-3-540-30192-9_45 fatcat:egwiwe4tc5eybo2qab6mxwfsjq

QUERY ROUTING IN A PEER-TO-PEER SEMANTIC LINK NETWORK

Hai Zhuge, Jie Liu, Liang Feng, Xiaoping Sun, Chao He
2005 Computational intelligence  
efficient query routing, and the schema mapping algorithms for query reformulation and heterogeneous data integration.  ...  Previous research on peer data management systems mainly considers data models for P2P databases, peer schema mediation methods, and query reformulation and optimization algorithms.  ...  Thanks also go to the anonymous reviewers and the guest editors for their valuable comments.  ... 
doi:10.1111/j.0824-7935.2005.00271.x fatcat:6gxyidqwobge5d3ma6hzpsktki

A service-oriented system for distributed data querying and integration on Grids

Carmela Comito, Anastasios Gounaris, Rizos Sakellariou, Domenico Talia
2009 Future generations computer systems  
by relying on a peer model for query reformulation to retrieve semantically equivalent expressions, and on a wrapper-mediator integration model for accessing and querying distributed data sources.  ...  Data sharing tools for Grids must include both distributed query processing and data integration functionality.  ...  A P2P data integration system uses a decentralized semantic network of mappings between peer schemas to reformulate user queries over every peer in the network.  ... 
doi:10.1016/j.future.2008.11.009 fatcat:kfomugq6vnajrn4gooowro3xyi
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