DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kwak, Jae-Cheol | ko |
dc.contributor.author | Moon, Songchun | ko |
dc.date.accessioned | 2008-06-02T04:16:20Z | - |
dc.date.available | 2008-06-02T04:16:20Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1995-06 | - |
dc.identifier.citation | MICROPROCESSING AND MICROPROGRAMMING, v.41, no.3, pp.227 - 244 | - |
dc.identifier.issn | 0165-6074 | - |
dc.identifier.uri | http://hdl.handle.net/10203/4798 | - |
dc.description.abstract | Visual queries based on schema graphs simplify access to databases for technical and non-technical users. Unlike relational databases, in object-oriented databases, the basic entity in a query, i.e. a class, is frequently considered as a compound of several entities to which the query operations may apply, which causes the deficiency in describing an entity of designation. In this paper, we propose a visual query language object query diagram (OQD) for object-oriented databases, where a class is decomposed into a number of object sets, each of which is a set of values of one of the attributes of the other classes. By representing each class and object sets in the class using the well-known Venn diagram in a query, OQD explicitly presents all the entities to which the operations in a query can apply. We describe the syntax and semantics of OQD through a number of illustrative examples. © 1995. | - |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | Elsevier BV | - |
dc.title | Two-dimensional specification of queries in object-oriented databases | - |
dc.type | Article | - |
dc.identifier.scopusid | 2-s2.0-0029322676 | - |
dc.type.rims | ART | - |
dc.citation.volume | 41 | - |
dc.citation.issue | 3 | - |
dc.citation.beginningpage | 227 | - |
dc.citation.endingpage | 244 | - |
dc.citation.publicationname | MICROPROCESSING AND MICROPROGRAMMING | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Moon, Songchun | - |
dc.contributor.nonIdAuthor | Kwak, Jae-Cheol | - |
dc.subject.keywordAuthor | Object-oriented databases | - |
dc.subject.keywordAuthor | Schema graph | - |
dc.subject.keywordAuthor | Venn diagram | - |
dc.subject.keywordAuthor | Visual query language | - |
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