DC Field | Value | Language |
---|---|---|
dc.contributor.author | Sockut, G.H. | ko |
dc.contributor.author | Burns, L.M. | ko |
dc.contributor.author | Malhotra, A. | ko |
dc.contributor.author | Whang, K.-Y. | ko |
dc.date.accessioned | 2009-11-04T04:50:25Z | - |
dc.date.available | 2009-11-04T04:50:25Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1993-10 | - |
dc.identifier.citation | Data and Knowledge Engineering, v.11, no.2, pp.171 - 202 | - |
dc.identifier.issn | 0169-023X | - |
dc.identifier.uri | http://hdl.handle.net/10203/12082 | - |
dc.description.abstract | GRAQULA is a graphical language for querying and updating a database. One version of GRAQULA provides a user interface for the entity-relationship data model, and another version (with almost identical syntax) provides a user interface for the relational model. Each version is relationally complete, and each depicts relationships (or expected joins) graphically, GRAQULA provides logical operations (e.g. negation) on graphical objects; these operations have user-specified scopes, allow nesting, and can involve existential or universal quantification. Aggregates (e.g. average) also have user-specified scopes. Queries can invoke other queries, and users and queries can pass parameters to queries. The design reflects a specified set of goals, including expressive power, consistency, and limitation of required memorization. © 1993. | - |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | Elsevier | - |
dc.title | GRAQULA: A graphical query language for entity-relationship or relational databases | - |
dc.type | Article | - |
dc.identifier.scopusid | 2-s2.0-0027677953 | - |
dc.type.rims | ART | - |
dc.citation.volume | 11 | - |
dc.citation.issue | 2 | - |
dc.citation.beginningpage | 171 | - |
dc.citation.endingpage | 202 | - |
dc.citation.publicationname | Data and Knowledge Engineering | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Whang, K.-Y. | - |
dc.contributor.nonIdAuthor | Sockut, G.H. | - |
dc.contributor.nonIdAuthor | Burns, L.M. | - |
dc.contributor.nonIdAuthor | Malhotra, A. | - |
dc.subject.keywordAuthor | Database query languages | - |
dc.subject.keywordAuthor | entity-relationship data model | - |
dc.subject.keywordAuthor | existential quantification | - |
dc.subject.keywordAuthor | graphical interfaces | - |
dc.subject.keywordAuthor | human factors | - |
dc.subject.keywordAuthor | relational data model | - |
dc.subject.keywordAuthor | scope of logical operations | - |
dc.subject.keywordAuthor | universal quantification | - |
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