🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsSvenskaTürkçeРусский한국어中文日本語EntityQ3667566· pop 12· linked from 140 articlesunique keyAlso known as k, key, key constraint, uniqueness constraintminimal superkey in relational database management systemsAvailable in 12 languagesFrançaisDeutsch日本語РусскийItalianoCzechLatvianNorwegianSvenskaUkrainianConnectionsrelational databaseEntitydatabase indexEntityCategoriesDatabase management systemsData modeling