EntityQ731314· pop 8· linked from 10 articlesnatural keySign in to savetype of unique key in a database formed of attributes that exist and are used in the external world outside the databaseConnectionsdatabaseEntityinformation systemEntityknowledge managementEntityrelational modelEntityprimary keyEntitydatabase administratorEntityminor scaleEntitySocial Security numberEntityConfluenceEntitydata qualityEntitydomain of discourseEntityfunctional dependencyEntityunique keyEntitybusiness ruleEntityunique identifierEntitysuperkeyEntitysurrogate keyEntityRalph KimballEntityCategoriesData modeling