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- Candidate_key abstract "In the relational model of databases, a candidate key of a relation is a minimal superkey for that relation; that is, a set of attributes such that: the relation does not have two distinct tuples (i.e. rows or records in common database language) with the same values for these attributes (which means that the set of attributes is a superkey) there is no proper subset of these attributes for which (1) holds (which means that the set is minimal).The constituent attributes are called prime attributes. Conversely, an attribute that does not occur in ANY candidate key is called a non-prime attribute.Since a relation contains no duplicate tuples, the set of all its attributes is a superkey if NULL values are not used. It follows that every relation will have at least one candidate key.The candidate keys of a relation tell us all the possible ways we can identify its tuples. As such they are an important concept for the design of database schema.".
- Candidate_key wikiPageExternalLink 2.1.2_Keys.html.
- Candidate_key wikiPageID "336975".
- Candidate_key wikiPageLength "7289".
- Candidate_key wikiPageOutDegree "21".
- Candidate_key wikiPageRevisionID "671958577".
- Candidate_key wikiPageWikiLink Alternate_key.
- Candidate_key wikiPageWikiLink Boolean_algebra.
- Candidate_key wikiPageWikiLink Boolean_logic.
- Candidate_key wikiPageWikiLink Category:Data_modeling.
- Candidate_key wikiPageWikiLink Compound_key.
- Candidate_key wikiPageWikiLink Database.
- Candidate_key wikiPageWikiLink Database_normalization.
- Candidate_key wikiPageWikiLink Database_schema.
- Candidate_key wikiPageWikiLink Functional_dependency.
- Candidate_key wikiPageWikiLink Implicant.
- Candidate_key wikiPageWikiLink Permutation.
- Candidate_key wikiPageWikiLink Power_set.
- Candidate_key wikiPageWikiLink Primary_key.
- Candidate_key wikiPageWikiLink Prime_implicant.
- Candidate_key wikiPageWikiLink Proper_subset.
- Candidate_key wikiPageWikiLink Relation_(database).
- Candidate_key wikiPageWikiLink Relational_database.
- Candidate_key wikiPageWikiLink Relational_model.
- Candidate_key wikiPageWikiLink Set_(mathematics).
- Candidate_key wikiPageWikiLink Subset.
- Candidate_key wikiPageWikiLink Superkey.
- Candidate_key wikiPageWikiLink Tuple.
- Candidate_key wikiPageWikiLink Unique_key.
- Candidate_key wikiPageWikiLinkText "Candidate Key".
- Candidate_key wikiPageWikiLinkText "Candidate key".
- Candidate_key wikiPageWikiLinkText "Candidate".
- Candidate_key wikiPageWikiLinkText "candidate key".
- Candidate_key wikiPageWikiLinkText "candidate keys".
- Candidate_key wikiPageWikiLinkText "candidate".
- Candidate_key wikiPageWikiLinkText "key candidates".
- Candidate_key wikiPageWikiLinkText "keys".
- Candidate_key hasPhotoCollection Candidate_key.
- Candidate_key wikiPageUsesTemplate Template:Cite_book.
- Candidate_key wikiPageUsesTemplate Template:Databases.
- Candidate_key wikiPageUsesTemplate Template:Reflist.
- Candidate_key subject Category:Data_modeling.
- Candidate_key hypernym Superkey.
- Candidate_key comment "In the relational model of databases, a candidate key of a relation is a minimal superkey for that relation; that is, a set of attributes such that: the relation does not have two distinct tuples (i.e.".
- Candidate_key label "Candidate key".
- Candidate_key sameAs Kandidátní_klíč.
- Candidate_key sameAs Llave_candidata.
- Candidate_key sameAs Clé_candidate.
- Candidate_key sameAs 候補キー.
- Candidate_key sameAs 후보_키.
- Candidate_key sameAs Kandidaatsleutel.
- Candidate_key sameAs Klucz_potencjalny.
- Candidate_key sameAs Chave_candidata.
- Candidate_key sameAs m.01xmd0.
- Candidate_key sameAs Потенциальный_ключ.
- Candidate_key sameAs Кандидат_за_кључ.
- Candidate_key sameAs Потенційний_ключ.
- Candidate_key sameAs Q2113197.
- Candidate_key sameAs Q2113197.
- Candidate_key wasDerivedFrom Candidate_key?oldid=671958577.
- Candidate_key isPrimaryTopicOf Candidate_key.