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Atribute neesenţiale şi recuperabile în schemele bazelor de date

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dc.contributor.author COTELEA, V.
dc.date.accessioned 2019-03-27T10:23:18Z
dc.date.available 2019-03-27T10:23:18Z
dc.date.issued 2009
dc.identifier.citation COTELEA, V. Atribute neesenţiale şi recuperabile în schemele bazelor de date. In: Meridian Ingineresc. 2009, nr. 2, pp. 18-19. ISSN 1683-853X. en_US
dc.identifier.issn 1683-853X
dc.identifier.uri http://repository.utm.md/handle/5014/1382
dc.description.abstract În articol sunt considerate schemele relaţionale definite în baza mulţimilor de dependenţe funcţionale reduse împărţite în clase de echivalenţă. Sunt introduse noţiunile de atribute neesenţiale şi recuperabile, şi propuşi algoritmi de determinare ale acestora. De asemenea, sunt prezentate unele proprietăţi ale schemelor, ţinând cont de aceste atribute. en_US
dc.description.abstract This paper considers relational schemas defined on the sets of reduced functional dependencies partitioned into equivalence classes. It’s defined the concept of recoverable and nonessential attributes, also algorithms for their determination are described. As well, some properties of schemas, based on these attributes, are presented. en
dc.description.abstract On considère dans l’article des schémas relationnelles définit en utilisant les ensembles des dépendances fonctionnelles réduits partagées en clases des équivalences. On a introduit les notions des attributs non essentielles et récupérables pour lesquels on propose des algorithmes pour les déterminer. Du même, on présent certaines propriétés des schémas de bases de données en tenant compte de ces attributs. fr
dc.description.abstract В статье рассмотрены реляционные схемы, определенные с помощью множества сокращенных функциональных зависимостей разбитого на классы эквивалентности. Введены понятия несущественного и восстанавливаемого атрибутов и предложено алгоритм их определения. Кроме того, изложено некоторые свойства схем, учитывая эти атрибуты. ru
dc.language.iso ro en_US
dc.publisher Editura U.T.M. en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject databases en_US
dc.subject baze de date en_US
dc.title Atribute neesenţiale şi recuperabile în schemele bazelor de date en_US
dc.title.alternative Nonessential and recoverable attributes in database schemas en_US
dc.title.alternative Attributs non essentielles et récupérables dans les schémas des bases de données en_US
dc.title.alternative Несущественные и восстанавливаемые атрибуты в схемах базы данных en_US
dc.type Article en_US


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