@article {61484,
	title = {An Algorithm Reformulation of XQuery Queries Using GLAV Mapping for Mediator-based System},
	journal = { Journal of Applied Computer Science \& Mathematics },
	number = {16},
	year = {2014},
	pages = {20-26},
	abstract = {
	
		This paper describes an algorithm for reformulation of XQuery queries. The mediation is based on an essential component called mediator. The main role of the mediator is to reformulate a user query, written in terms of global schema, in queries written in terms of sources schemas. Our algorithm is based on the principle of logical equivalence, simple and complex unification, to obtain a better reformulation. It takes as parameter the query XQuery, the global schema (written in XMLSchema), mappings GLAV and gives as a result a query written in terms of sources schemas. The results of implementation show the proper functioning of the algorithm.
	
	
		Copyright of Journal of Applied Computer Science \&amp; Mathematics is the property of Journal of Applied Computer Science \&amp; Mathematics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder{\textquoteright}s express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.
	

},
	url = {https://web.p.ebscohost.com/abstract?direct=true\&profile=ehost\&scope=site\&authtype=crawler\&jrnl=20664273\&AN=116953661\&h=GlU7K8JEeDJzxobAH8\%2fWKRBlIWEe4STPgxZ6B\%2fm0o1ii4c1SAbR3vPqhd1\%2bNOiSMWY1WZszrjn0keTGWWDxVBQ\%3d\%3d\&crl=c\&resultNs=AdminWebAuth\&resultLo},
	author = {BENHARZALLAH, Saber and Okba KAZAR}
}
