An adaptive query execution system for data integration
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
The state of the art in distributed query processing
ACM Computing Surveys (CSUR)
Distributed query evaluation on semistructured data
ACM Transactions on Database Systems (TODS)
Honey, I shrunk the XQuery!: an XML algebra optimization approach
Proceedings of the 4th international workshop on Web information and data management
Query Decomposition for a Distributed Object-Oriented Mediator System
Distributed and Parallel Databases
Querying XML Views of Relational Data
Proceedings of the 27th International Conference on Very Large Data Bases
Answering XML Queries on Heterogeneous Data Sources
Proceedings of the 27th International Conference on Very Large Data Bases
Query Decomposition and View Maintenance for Query Languages for Unstructured Data
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
Integrating Heterogeneous Data Sources with XML and XQuery
DEXA '02 Proceedings of the 13th International Workshop on Database and Expert Systems Applications
An XML query engine for network-bound data
The VLDB Journal — The International Journal on Very Large Data Bases
Finding hot query patterns over an XQuery stream
The VLDB Journal — The International Journal on Very Large Data Bases
Semantic query optimization in an automata-algebra combined XQuery engine over XML streams
VLDB '04 Proceedings of the Thirtieth international conference on Very large data bases - Volume 30
FluXQuery: an optimizing XQuery processor for streaming XML data
VLDB '04 Proceedings of the Thirtieth international conference on Very large data bases - Volume 30
Distributed query optimization in the stack-based approach
HPCC'05 Proceedings of the First international conference on High Performance Computing and Communications
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The concept of XML views is proposed to integrate heterogeneous data sources in XML, and a global XML view can represent the distributed heterogeneous data sources as single XML document. XQuery is one of the standard query languages for searching XML data. How to process efficiently of global XQuery queries, which are written under a global XML view, emerges as a new research topic. Popular techniques of distributed query processing are based on decomposition, and static decomposition is one of the processing techniques for the traditional query language. However, XQuery has a complex syntax such as FOR clauses that are not supported by other query languages, and its structural complexity causes some considerations for the decomposition of global XQuery queries. In this paper, we propose a method to decompose a global XQuery query into local XQuery queries and to construct the result of the global XQuery query from the results of the local XQuery queries.