# Install the Pentaho Repository host database

The Pentaho Repository houses data needed for Pentaho tools to provide scheduling and security functions. The repository also stores metadata and models for reports that you create.

Perform the following steps before specifying the host database for the Pentaho Repository:

1. Choose which type of database to use for the Pentaho Repository's host database, then install it. Pentaho supports these databases:
   * PostgreSQL
   * MySQL
   * MariaDB
   * Oracle
   * MS SQL Server
2. Check the [Components Reference](/install/10.2-install/components-reference.md) to section to determine which versions of the databases Pentaho currently supports.
3. Download and install the database of your choice.
4. Verify that the database is installed correctly.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.pentaho.com/install/10.2-install/pentaho-installation-overview-cp/archive-installation/archive-installation-process/prepare-your-windows-environment-for-an-archive-install/install-the-pentaho-repository-host-database-shared.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.