The development of ordered SQL packages for modelling advanced applications

Ng, W. and Levene, Mark (1997) The development of ordered SQL packages for modelling advanced applications. In: Hameurlain, A. and Min Tjoa, A. (eds.) Database and Expert Systems Applications: 8th International Conference. Lecture Notes in Computer Science 1308. Springer, pp. 529-538. ISBN 9783540634782.

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Official URL: https://doi.org/10.1007/BFb0022061

Abstract

The ordered relational model is an extension of the relational model which incorporates partial orderings into data domains. We have already defined and implemented a minimal extension of SQL, called OSQL, which allows querying over ordered relational databases. One of the important facilities provided by OSQL is that it allows users to capture the underlying semantics of the ordering of the data for a given application. Herein we demonstrate that OSQL aided with a package discipline can be an effective means to manage the inter-related operations and the underlying data domains of a wide range of advanced application such as: tree-structured information, temporal information, incomplete information and fuzzy information. We illustrate with examples the uses of some generic operations arising from these applications in the form of four OSQL packages called: OSQL_TREE, OSQL_TIME, OSQL_INCOMP and OSQL_FUZZY, respectively.

Metadata

Item Type:	Book Section
School:	Birkbeck Faculties and Schools > Faculty of Science > School of Computing and Mathematical Sciences
Depositing User:	Sarah Hall
Date Deposited:	08 Jun 2021 09:42
Last Modified:	09 Aug 2023 12:51
URI:	https://eprints.bbk.ac.uk/id/eprint/44650

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