How do I set up a connection to my Snowflake database using Lakehouse Federation in Databricks?
To set up a connection to your Snowflake database using Lakehouse Federation in Databricks, follow these steps:

1. Ensure your workspace meets the requirements specified in the "Before you begin" section of the documentation.
2. If you plan to authenticate using single sign-on (SSO), create a security integration in the Snowflake console as described in the "(Optional) Create a security integration in the Snowflake console" section of the documentation.
3. Create a connection to your Snowflake database in your Databricks Unity Catalog metastore. You must be a metastore admin or a user with the CREATE CONNECTION privilege on the Unity Catalog metastore attached to the workspace.

Here's an example of how to create a connection using SQL:

```sql
CREATE CONNECTION snowflake_connection
TO 'snowflake://<account_name>.snowflakecomputing.com/?warehouse=<warehouse_name>&db=<database_name>'
USING {
  'type': 'snowflake',
  'username': '<username>',
  'password': '<password>',
  'authenticator': 'https://<account_name>.snowflakecomputing.com/oauth/token-request',
  'security_integration': '<integration-name>'
};
```

Replace the placeholders (`<account_name>`, `<warehouse_name>`, `<database_name>`, `<username>`, `<password>`, and `<integration-name>`) with your Snowflake account name, warehouse name, database name, username, password, and the name of the security integration you created in the Snowflake console (if applicable).

After creating the connection, you can create a foreign catalog that mirrors your Snowflake database in Unity Catalog. This allows you to use Unity Catalog query syntax and data governance tools to manage Databricks user access to the database.

For more information on creating a foreign catalog, refer to the "Create a foreign catalog" section of the documentation.