# Data reference

> The details you look up. What analytics shares, the data model, the database schema, and statistics.

Source: https://contributors.home-assistant.io/data/reference/

The pages in this section are for looking things up. For how analytics fits together, start with [how analytics works](https://contributors.home-assistant.io/data/how-it-works/).

- [What analytics shares](https://contributors.home-assistant.io/data/reference/analytics-data/): every field Home Assistant sends when you turn on analytics.
- [The data model](https://contributors.home-assistant.io/data/reference/data-model/): events, states, context, and actions, the building blocks of everything Home Assistant records.
- [Database schema](https://contributors.home-assistant.io/data/reference/database-schema/): the tables of the recorder database, and how they connect.
- [Statistics](https://contributors.home-assistant.io/data/reference/statistics/): how sensor data is summarized into 5-minute and hourly statistics.