Parallel Query Processing for Cloud Computing
Environments

Momani, Zaid

dc.contributor.author	Momani, Zaid	en
dc.date.accessioned	2018-10-05T15:13:21Z
dc.date.issued	2018-10-05
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/47722
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.3010
dc.rights	Default License
dc.subject	semantic web	en
dc.subject	cloud computing	en
dc.subject	truth finding	en
dc.subject	map reduce	en
dc.subject	big data	en
dc.title	Parallel Query Processing for Cloud Computing Environments	en
heal.type	doctoralThesis
heal.classification	mapreduce	el
heal.classification	Data integration (Computer science)	el
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh2010014388
heal.dateAvailable	2019-10-04T21:00:00Z
heal.language	en
heal.access	embargo
heal.recordProvider	ntua	el
heal.publicationDate	2018-03-29
heal.abstract	Massive datasets of unprecedented sizes are emerging in diverse fields. These datasets require tools to be effectively analyzed in order to extract value. Massively parallel tools have emerged to address these challenges. Most importantly, core emphasis must be focused on enabling tasks to be parallelized to the optimal. Thus the aim of this thesis is to provide a method of answering queries in a single round of MapReduce. With special focus on input, that is, binary relations and ”fat” relations. A multiway join algorithm is implemented on the two types of inputs and comparisons are made, where we find that "fat" relations achieve better process time due to the nature of these datasets. In the case of "fat" relations it is studied in the context of data integration, that is, an application is proposed to crosschecking multiple data sources with conflicting information. The case of binary relation is also studied with regard to RDF datasets, which is a significantly important application in the realm of management of semantic web data, and achieve significant increase in the speed of query processing.	en
heal.advisorName	Afrati, Foto	en
heal.committeeMemberName	Fotakis, Dimitris	en
heal.committeeMemberName	Gergatsoulis, Manolis	en
heal.committeeMemberName	Koziris, Nectarios	en
heal.committeeMemberName	Kantere, Verena	en
heal.committeeMemberName	Goumas, Georgios	en
heal.committeeMemberName	Stamou, Giorgos	en
heal.committeeMemberName	Pekpestzi, Kiamal	el
heal.academicPublisher	Σχολή Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών	el
heal.academicPublisherID	ntua
heal.fullTextAvailability	true