Theorem about Amplification of Relational Algebra by Recursive Objects
| Parent link: | Knowledge Engineering and Management: Scientific Journal Vol. 123.— 2011.— [P. 591-596] |
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| Sumari: | Title screen This paper discusses relational algebra extended by recursive relations (tables). The interpretation of the recursive table is proposed, the closure of the extended relational algebra is proved, and a new approach to modeling a physical database structure is offered that is suitable for representing complicated hierarchical data sets. It combines methods of set theory for the recursive relations within the framework of a single modeling paradigm, which allows users to define self-similar, partially self-similar, or hierarchical sets. The use of recursive relations in the definitions of self-similar objects yields representations that can be rendered at varying levels of detail or precision at run time Режим доступа: по договору с организацией-держателем ресурса |
| Idioma: | anglès |
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2011
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| Accés en línia: | http://link.springer.com/chapter/10.1007/978-3-642-25661-5_72 |
| Format: | Electrònic Capítol de llibre |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=636418 |
| Sumari: | Title screen This paper discusses relational algebra extended by recursive relations (tables). The interpretation of the recursive table is proposed, the closure of the extended relational algebra is proved, and a new approach to modeling a physical database structure is offered that is suitable for representing complicated hierarchical data sets. It combines methods of set theory for the recursive relations within the framework of a single modeling paradigm, which allows users to define self-similar, partially self-similar, or hierarchical sets. The use of recursive relations in the definitions of self-similar objects yields representations that can be rendered at varying levels of detail or precision at run time Режим доступа: по договору с организацией-держателем ресурса |
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