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database, MTQL, language, query, TQL, object-oriented, MOQL, OQL, multimedia

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Subject-Keyword: database MTQL language query TQL object-oriented MOQL OQL multimedia

Type of item: Computing Science Technical Report

Computing science technical report ID: TR97-01

Language: English

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Description: Technical report TR97-01. Declarative query languages are an important feature of database management systems and have played an important role in their success. As database management technology enters the multimedia information system domain, the availability of query languages for multimedia applications will be equally important. However, one common problem with currently existing multimedia query languages is their lack of generality. They are designed either for a certain medium e.g. images or special applications e.g. medical, geographical information systems. We describe general multimedia queries based on the ODMG-s Object Query Language OQL and TIGUKAT Query Language TQL. In order to capture the temporal and spatial relationships in multimedia data, both OQL and TQL are extended by a set of multimedia primitives. These extended OQL and TQL also include functions for query presentation. We illustrate the extended language features by query examples.

Date created: 1997

DOI: doi:10.7939-R3NG4GV9F

License information: Creative Commons Attribution 3.0 Unported

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Author: Li, John Ozsu, M. Tamer Szafron, Duane

Source: https://era.library.ualberta.ca/


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University of Alberta Multimedia Extensions To Database Query Languages by John Z.
Li, M.
Tamer O zsu, Duane Szafron Laboratory for Database Systems Research Department of Computing Science University of Alberta Edmonton, Alberta Canada T6G 2H1 fzhong,ozsu,duaneg@cs.ualberta.ca Technical Report TR 97{01 January 1997 DEPARTMENT OF COMPUTING SCIENCE The University of Alberta Edmonton, Alberta, Canada Multimedia Extensions To Database Query Languages Abstract Declarative query languages are an important feature of database management systems and have played an important role in their success.
As database management technology enters the multimedia information system domain, the availability of query languages for multimedia applications will be equally important.
However, one common problem with currently existing multimedia query languages is their lack of generality.
They are designed either for a certain medium (e.g.
images) or special applications (e.g., medical, geographical information systems).
We describe general multimedia queries based on the ODMGs Object Query Language (OQL) and TIGUKAT Query Language (TQL).
In order to capture the temporal and spatial relationships in multimedia data, both OQL and TQL are extended by a set of multimedia primitives. These extended OQL and TQL also include functions for query presentation. We illustrate the extended language features by query examples. Keywords: multimedia, OQL, TQL, MOQL, MTQL, Object-oriented, database, query, language This research is supported by a grant from the Canadian Institute for Telecommunications Research (CITR) under the Network of Centres of Excellence (NCE) program of the Government of Canada. 1 Contents 1 Introduction 5 2 Related Work 8 3 Query Languages and The Extensions 10 4 Spatial Primitives 15 5 Temporal Primitives 20 6 Implementation of The Languages 29 7 Conclusion 30 A Appendix: MOQL Specication 35 3.1 Object Query Language .
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