. . . . "DE - Spolkov\u00E1 republika N\u011Bmecko" . "Logical foundations for similarity-based databases"@en . "Lecture Notes in Computer Science" . "Logical foundations for similarity-based databases"@en . "2"^^ . "RIV/61989592:15310/10:00010971" . "Vychodil, Vil\u00E9m" . "15"^^ . "2"^^ . . . "5667" . "Logical foundations for similarity-based databases" . . . "268798" . "Logical foundations for similarity-based databases" . "B\u011Blohl\u00E1vek, Radim" . . . . "1" . . . "Extensions of relational databases which aim at utilizing various aspects of similarity and imprecision in data processing are widespread in the literature. A need for development of solid foundations for such extensions, sometimes called similarity-based relational databases, has repeatedly been emphasized by leading database experts. This paper argues that, contrary to what may be perceived from the literature, solid foundations for similarity-based databases can be developed in a conceptually simple way. In this paper, we outline such foundations and develop in detail a part of the the facet related to similarity-based queries and relational algebra. The foundations are close in principle to Codd's foundations for relational databases, yet they account for the main aspects of similarity-based data manipulation." . "databases, relational model, similarity"@en . "RIV/61989592:15310/10:00010971!RIV11-MSM-15310___" . "15310" . "Z(MSM6198959214)" . . . "Extensions of relational databases which aim at utilizing various aspects of similarity and imprecision in data processing are widespread in the literature. A need for development of solid foundations for such extensions, sometimes called similarity-based relational databases, has repeatedly been emphasized by leading database experts. This paper argues that, contrary to what may be perceived from the literature, solid foundations for similarity-based databases can be developed in a conceptually simple way. In this paper, we outline such foundations and develop in detail a part of the the facet related to similarity-based queries and relational algebra. The foundations are close in principle to Codd's foundations for relational databases, yet they account for the main aspects of similarity-based data manipulation."@en . . "[684B2C80DA55]" . "0302-9743" .