# Relational terminology: Attributes

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Your system will need to keep track of certain facts about each entity. These facts are referred to as the entity's **attributes**.
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If your system includes Customer entities, for example, you'll probably want to know the names and addresses of the customers and perhaps the businesses they're in.

![](https://3408508746-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Lis5JLcnSD2vdYdyQ3U%2F-LjCKWmUxhtV1Ejxq51s%2F-LjCL9slMC5JEcatHfG9%2Frelation-terminology-2.png?alt=media\&token=ffca03ca-3f2a-4911-88c5-dd8d98a1df55)