> For the complete documentation index, see [llms.txt](https://help.santesuite.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.santesuite.org/santedb/data-and-information-architecture/conceptual-data-model/entities.md).

# Entities

An entity within the SanteDB data model is used to represent a person, place, or thing. Entities represent the who, which and where aspects of an action. Entities are further classified into several sub classes illustrated in Figure 1.

![Figure 1 - Entity Classes](/files/-LZu03EaziAaAvb6y76c)