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- Query_by_Example abstract "Query by Example (QBE) is a database query language for relational databases. It was devised by Moshé M. Zloof at IBM Research during the mid-1970s, in parallel to the development of SQL. It is the first graphical query language, using visual tables where the user would enter commands, example elements and conditions. Many graphical front-ends for databases use the ideas from QBE today. Originally limited only for the purpose of retrieving data, QBE was later extended to allow other operations, such as inserts, deletes and updates, as well as creation of temporary tables. The motivation behind QBE is that a parser can convert the user's actions into statements expressed in a database manipulation language, such as SQL. Behind the scenes, it is this statement that is actually executed. A suitably comprehensive front-end can minimize the burden on the user to remember the finer details of SQL, and it is easier and more productive for end-users (and even programmers) to select tables and columns by selecting them rather than typing in their names, In the context of information retrieval, QBE has a somewhat different meaning. The user can submit a document, or several documents, and ask for "similar" documents to be retrieved from a document database. Similarity search is based comparing document vectors (see Vector Space Model).QBE is a seminal work in end-user development, frequently cited in research papers as an early example of this topic.Currently, QBE is supported in several relational database front ends, notably Microsoft Access, which implements "Visual Query by Example", as well as Microsoft SQL Server Enterprise Manager. It is also implemented in several object-oriented databases (e.g. in db4o).QBE is based on the logical formalism called tableau query, although QBE adds some extensions to that, much like SQL is based on the relational algebra.".
- Query_by_Example thumbnail QBESampleTable2.jpg?width=300.
- Query_by_Example wikiPageExternalLink querycriteria-examples.
- Query_by_Example wikiPageExternalLink qbe.
- Query_by_Example wikiPageExternalLink 0,,sid41_gci214554,00.html.
- Query_by_Example wikiPageExternalLink soylu_medes2013.pdf.
- Query_by_Example wikiPageExternalLink node2.html.
- Query_by_Example wikiPageExternalLink qbe.pdf.
- Query_by_Example wikiPageID "2271084".
- Query_by_Example wikiPageLength "5362".
- Query_by_Example wikiPageOutDegree "30".
- Query_by_Example wikiPageRevisionID "633158979".
- Query_by_Example wikiPageWikiLink California.
- Query_by_Example wikiPageWikiLink Canada.
- Query_by_Example wikiPageWikiLink Category:1970s_software.
- Query_by_Example wikiPageWikiLink Category:Human–computer_interaction.
- Query_by_Example wikiPageWikiLink Category:IBM_software.
- Query_by_Example wikiPageWikiLink Category:Query_languages.
- Query_by_Example wikiPageWikiLink Category:Relational_model.
- Query_by_Example wikiPageWikiLink Database.
- Query_by_Example wikiPageWikiLink Db4o.
- Query_by_Example wikiPageWikiLink End-user_development.
- Query_by_Example wikiPageWikiLink File:QBESampleTable2.jpg.
- Query_by_Example wikiPageWikiLink IBM_Research.
- Query_by_Example wikiPageWikiLink Information_retrieval.
- Query_by_Example wikiPageWikiLink Microsoft_Query.
- Query_by_Example wikiPageWikiLink Microsoft_Query_by_Example.
- Query_by_Example wikiPageWikiLink Moshé_M._Zloof.
- Query_by_Example wikiPageWikiLink Object_database.
- Query_by_Example wikiPageWikiLink Parser.
- Query_by_Example wikiPageWikiLink Parsing.
- Query_by_Example wikiPageWikiLink Query_language.
- Query_by_Example wikiPageWikiLink Relational_algebra.
- Query_by_Example wikiPageWikiLink Relational_database.
- Query_by_Example wikiPageWikiLink SQL.
- Query_by_Example wikiPageWikiLink Suppliers_and_Parts_database.
- Query_by_Example wikiPageWikiLink Tableau_query.
- Query_by_Example wikiPageWikiLink United_States.
- Query_by_Example wikiPageWikiLink United_States_of_America.
- Query_by_Example wikiPageWikiLink Vector_Space_Model.
- Query_by_Example wikiPageWikiLink Vector_space_model.
- Query_by_Example wikiPageWikiLinkText "QBE".
- Query_by_Example wikiPageWikiLinkText "Query By Example".
- Query_by_Example wikiPageWikiLinkText "Query by Example".
- Query_by_Example wikiPageWikiLinkText "a row in the desired results of a query".
- Query_by_Example wikiPageWikiLinkText "search by example".
- Query_by_Example hasPhotoCollection Query_by_Example.
- Query_by_Example wikiPageUsesTemplate Template:Citation.
- Query_by_Example subject Category:1970s_software.
- Query_by_Example subject Category:Human–computer_interaction.
- Query_by_Example subject Category:IBM_software.
- Query_by_Example subject Category:Query_languages.
- Query_by_Example subject Category:Relational_model.
- Query_by_Example hypernym Language.
- Query_by_Example type Language.
- Query_by_Example type Language.
- Query_by_Example comment "Query by Example (QBE) is a database query language for relational databases. It was devised by Moshé M. Zloof at IBM Research during the mid-1970s, in parallel to the development of SQL. It is the first graphical query language, using visual tables where the user would enter commands, example elements and conditions. Many graphical front-ends for databases use the ideas from QBE today.".
- Query_by_Example label "Query by Example".
- Query_by_Example sameAs Cerca_mitjançant_exemple.
- Query_by_Example sameAs Query_by_Example.
- Query_by_Example sameAs Búsqueda_mediante_ejemplo.
- Query_by_Example sameAs Query_by_Example.
- Query_by_Example sameAs Query_by_Example.
- Query_by_Example sameAs 例示による問い合わせ.
- Query_by_Example sameAs Query_By_Example.
- Query_by_Example sameAs Query_by_Example.
- Query_by_Example sameAs m.06_s5g.
- Query_by_Example sameAs QBE.
- Query_by_Example sameAs Query_by_Example.
- Query_by_Example sameAs Q114486.
- Query_by_Example sameAs Q114486.
- Query_by_Example wasDerivedFrom Query_by_Example?oldid=633158979.
- Query_by_Example depiction QBESampleTable2.jpg.
- Query_by_Example isPrimaryTopicOf Query_by_Example.