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Visually querying object-oriented databases
Bibliography: pages 141-145.
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Department of Computer Science
2016
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| _version_ | 1867613143685922816 |
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| access_status_str | Open Access |
| author | Chavda, Manoj |
| author2 | Wood, Peter Theodore |
| author_browse | Chavda, Manoj Wood, Peter Theodore |
| author_facet | Wood, Peter Theodore Chavda, Manoj |
| author_sort | Chavda, Manoj |
| collection | Thesis |
| description | Bibliography: pages 141-145. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/17516 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:31:28.055Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Computer Science |
| publisherStr | Department of Computer Science |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/17516 Visually querying object-oriented databases Chavda, Manoj Wood, Peter Theodore Computer Science Bibliography: pages 141-145. 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. 2016-03-04T16:53:21Z 2016-03-04T16:53:21Z 1997 Master Thesis Masters MSc http://hdl.handle.net/11427/17516 eng application/pdf Department of Computer Science Faculty of Science University of Cape Town |
| spellingShingle | Computer Science Chavda, Manoj Visually querying object-oriented databases |
| thesis_degree_str | Master's |
| title | Visually querying object-oriented databases |
| title_full | Visually querying object-oriented databases |
| title_fullStr | Visually querying object-oriented databases |
| title_full_unstemmed | Visually querying object-oriented databases |
| title_short | Visually querying object-oriented databases |
| title_sort | visually querying object oriented databases |
| topic | Computer Science |
| url | http://hdl.handle.net/11427/17516 |
| work_keys_str_mv | AT chavdamanoj visuallyqueryingobjectorienteddatabases |