# SQL support

## Overview

Joule ships with an embedded in-memory modern SQL engine, [DuckDB](https://duckdb.org). This is used to capture events flowing through the processing pipeline along with supporting the metrics engine implementation.

### Key Features

* [Event tap](https://docs.fractalworks.io/joule/components/processors/event-tap) for event capture and storage
* [Metrics engine](https://docs.fractalworks.io/joule/components/analytics/metrics-engine) to provide SQL analytics
* Data access via the [Rest API](https://docs.fractalworks.io/joule/developer-guides/api-endpoints/data-access-api)