🌐EnglishEnglishDeutschEspañolFrançais中文日本語EntityQ731314· pop 8· linked from 10 articlesnatural keyAlso known as business key, domain keytype of unique key in a database formed of attributes that exist and are used in the external world outside the databaseAvailable in 8 languagesEspañolFrançaisDeutsch中文NorwegianUkrainianzh_yuevia Wikidata sitelinks · CC0ConnectionsdatabaseEntityinformation systemEntityCategoriesData modeling