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- Boyce–Codd_normal_form abstract "Boyce–Codd normal form (or BCNF or 3.5NF) is a normal form used in database normalization. It is a slightly stronger version of the third normal form (3NF). BCNF was developed in 1974 by Raymond F. Boyce and Edgar F. Codd to address certain types of anomalies not dealt with by 3NF as originally defined.If a relational schema is in BCNF then all redundancy based on functional dependency has been removed, although other types of redundancy may still exist. A relational schema R is in Boyce–Codd normal form if and only if for every one of its dependencies X → Y, at least one of the following conditions hold: X → Y is a trivial functional dependency (Y ⊆ X) X is a super key for schema RChris Date has pointed out that a definition of what we now know as BCNF appeared in a paper by Ian Heath in 1971. Date writes: \"Since that definition predated Boyce and Codd's own definition by some three years, it seems to me that BCNF ought by rights to be called Heath normal form. But it isn't.\"Edgar F. Codd released his original paper 'A Relational Model of Data for Large Shared Databanks' in June 1970. This was the first time the notion of a relational database was published. All work after this, including the Boyce-Codd normal form method was based on this relational model.".
- Boyce–Codd_normal_form wikiPageExternalLink rm8.html.
- Boyce–Codd_normal_form wikiPageExternalLink NormalizationRules.html.
- Boyce–Codd_normal_form wikiPageID "3850023".
- Boyce–Codd_normal_form wikiPageLength "11754".
- Boyce–Codd_normal_form wikiPageOutDegree "20".
- Boyce–Codd_normal_form wikiPageRevisionID "705031660".
- Boyce–Codd_normal_form wikiPageWikiLink Candidate_key.
- Boyce–Codd_normal_form wikiPageWikiLink Category:Database_normalization.
- Boyce–Codd_normal_form wikiPageWikiLink Christopher_J._Date.
- Boyce–Codd_normal_form wikiPageWikiLink Database_normalization.
- Boyce–Codd_normal_form wikiPageWikiLink Database_schema.
- Boyce–Codd_normal_form wikiPageWikiLink Edgar_F._Codd.
- Boyce–Codd_normal_form wikiPageWikiLink Elementary_Key_Normal_Form.
- Boyce–Codd_normal_form wikiPageWikiLink Functional_dependency.
- Boyce–Codd_normal_form wikiPageWikiLink If_and_only_if.
- Boyce–Codd_normal_form wikiPageWikiLink Raymond_F._Boyce.
- Boyce–Codd_normal_form wikiPageWikiLink Referential_integrity.
- Boyce–Codd_normal_form wikiPageWikiLink Second_normal_form.
- Boyce–Codd_normal_form wikiPageWikiLink Stiglers_law_of_eponymy.
- Boyce–Codd_normal_form wikiPageWikiLink Superkey.
- Boyce–Codd_normal_form wikiPageWikiLink Third_normal_form.
- Boyce–Codd_normal_form wikiPageWikiLink Transitive_dependency.
- Boyce–Codd_normal_form wikiPageWikiLinkText "BCNF - Boyce–Codd Normal Form".
- Boyce–Codd_normal_form wikiPageWikiLinkText "BCNF".
- Boyce–Codd_normal_form wikiPageWikiLinkText "Boyce–Codd Normal Form".
- Boyce–Codd_normal_form wikiPageWikiLinkText "Boyce–Codd normal form".
- Boyce–Codd_normal_form wikiPageWikiLinkText "Boyce–Codd".
- Boyce–Codd_normal_form wikiPageUsesTemplate Template:Database_normalization.
- Boyce–Codd_normal_form wikiPageUsesTemplate Template:Refbegin.
- Boyce–Codd_normal_form wikiPageUsesTemplate Template:Refend.
- Boyce–Codd_normal_form wikiPageUsesTemplate Template:Reflist.
- Boyce–Codd_normal_form subject Category:Database_normalization.
- Boyce–Codd_normal_form hypernym Form.
- Boyce–Codd_normal_form type Redirect.
- Boyce–Codd_normal_form comment "Boyce–Codd normal form (or BCNF or 3.5NF) is a normal form used in database normalization. It is a slightly stronger version of the third normal form (3NF). BCNF was developed in 1974 by Raymond F. Boyce and Edgar F. Codd to address certain types of anomalies not dealt with by 3NF as originally defined.If a relational schema is in BCNF then all redundancy based on functional dependency has been removed, although other types of redundancy may still exist.".
- Boyce–Codd_normal_form label "Boyce–Codd normal form".
- Boyce–Codd_normal_form sameAs Q2460153.
- Boyce–Codd_normal_form sameAs Boyce-Coddova_normální_forma.
- Boyce–Codd_normal_form sameAs Forma_normal_de_Boyce-Codd.
- Boyce–Codd_normal_form sameAs Бойс-Коддтың_қарапайым_формасы.
- Boyce–Codd_normal_form sameAs m.0b36gd.
- Boyce–Codd_normal_form sameAs Нормальная_форма_Бойса_—_Кодда.
- Boyce–Codd_normal_form sameAs Бојс-Кодова_нормална_форма.
- Boyce–Codd_normal_form sameAs Нормальна_форма_Бойса_—_Кодда.
- Boyce–Codd_normal_form sameAs Q2460153.
- Boyce–Codd_normal_form sameAs BC正規化.
- Boyce–Codd_normal_form wasDerivedFrom Boyce–Codd_normal_form?oldid=705031660.
- Boyce–Codd_normal_form isPrimaryTopicOf Boyce–Codd_normal_form.