> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hyzecloud.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Databases

> Databases are managed data services attached to your workspace.

Hyze Cloud can provision PostgreSQL, MySQL, MongoDB, and Redis.

## Goal

Understand when to create a database and how it connects to apps.

## When to use

Create a database when your app needs persistent data, queues, cache, or document storage.

## Example

```json theme={"system"}
{
  "name": "prod-postgres",
  "engine": "postgresql",
  "memoryMB": 1024,
  "storageGB": 20
}
```

## How apps connect

After creation, Hyze Cloud returns a connection string.

Store it as an app environment variable like `DATABASE_URL`.

## Next steps

<CardGroup cols={2}>
  <Card title="Provision a database" icon="database" href="/en/guides/provision-a-database">
    Create a database and connect it to an app.
  </Card>

  <Card title="Databases API" icon="book-open" href="/api-reference/databases">
    View database endpoints.
  </Card>
</CardGroup>