Visually querying object-oriented databases

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dc.contributor.advisorWood, Peter Theodoreen_ZA
dc.contributor.authorChavda, Manojen_ZA
dc.date.accessioned2016-03-04T16:53:21Z
dc.date.available2016-03-04T16:53:21Z
dc.date.issued1997en_ZA
dc.descriptionBibliography: pages 141-145.en_ZA
dc.description.abstractAs database requirements increase, the ability to construct database queries efficiently becomes more important. The traditional means of querying a database is to write a textual query, such as writing in SQL to query a relational database. Visual query languages are an alternative means of querying a database; a visual query language can embody powerful query abstraction and user feedback techniques, thereby making them potentially easier to use. In this thesis, we develop a visual query system for ODMG-compliant object-oriented databases, called QUIVER. QUIVER has a comprehensive expressive power; apart from supporting data types such as sets, bags, arrays, lists, tuples, objects and relationships, it supports aggregate functions, methods and sub-queries. The language is also consistent, as constructs with similar functionality have similar visual representations. QUIVER uses the DOT layout engine to automatically layout a query; QUIVER queries are easily constructed, as the system does not constrain the spatial arrangement of query items. QUIVER also supports a query library, allowing queries to be saved, retrieved and shared among users. A substantial part of the design has been implemented using the ODMG-compliant database system O₂, and the usability of the interface as well as the query language itself is presented. Visual queries are translated to OQL, the standard query language proposed by the ODMG, and query answers are presented using O₂ Look. During the course of our investigation, we conducted a user evaluation to compare QUIVER and OQL. The results were extremely encouraging in favour of QUIVER.en_ZA
dc.identifier.apacitationChavda, M. (1997). <i>Visually querying object-oriented databases</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Computer Science. Retrieved from http://hdl.handle.net/11427/17516en_ZA
dc.identifier.chicagocitationChavda, Manoj. <i>"Visually querying object-oriented databases."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Computer Science, 1997. http://hdl.handle.net/11427/17516en_ZA
dc.identifier.citationChavda, M. 1997. Visually querying object-oriented databases. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Chavda, Manoj AB - As database requirements increase, the ability to construct database queries efficiently becomes more important. The traditional means of querying a database is to write a textual query, such as writing in SQL to query a relational database. Visual query languages are an alternative means of querying a database; a visual query language can embody powerful query abstraction and user feedback techniques, thereby making them potentially easier to use. In this thesis, we develop a visual query system for ODMG-compliant object-oriented databases, called QUIVER. QUIVER has a comprehensive expressive power; apart from supporting data types such as sets, bags, arrays, lists, tuples, objects and relationships, it supports aggregate functions, methods and sub-queries. The language is also consistent, as constructs with similar functionality have similar visual representations. QUIVER uses the DOT layout engine to automatically layout a query; QUIVER queries are easily constructed, as the system does not constrain the spatial arrangement of query items. QUIVER also supports a query library, allowing queries to be saved, retrieved and shared among users. A substantial part of the design has been implemented using the ODMG-compliant database system O₂, and the usability of the interface as well as the query language itself is presented. Visual queries are translated to OQL, the standard query language proposed by the ODMG, and query answers are presented using O₂ Look. During the course of our investigation, we conducted a user evaluation to compare QUIVER and OQL. The results were extremely encouraging in favour of QUIVER. DA - 1997 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1997 T1 - Visually querying object-oriented databases TI - Visually querying object-oriented databases UR - http://hdl.handle.net/11427/17516 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/17516
dc.identifier.vancouvercitationChavda M. Visually querying object-oriented databases. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Computer Science, 1997 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/17516en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Computer Scienceen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherComputer Scienceen_ZA
dc.titleVisually querying object-oriented databasesen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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