# 4.0 Prerequisites

## Install PSQL Command Line Utility

Follow the instruction outlined in the Adobe Experience Platform documentation to install the psql client: [PSQL Install Guide](https://experienceleague.adobe.com/docs/experience-platform/query/clients/psql.html)

## Install Power BI

{% hint style="warning" %}
**Only for Windows users**
{% endhint %}

[Install Microsoft Power BI](https://experienceleague.adobe.com/docs/experience-platform/query/clients/power-bi.html)

Make sure that you install the exact version of **npgsql** as mentioned on the document, otherwise you will not be able to connect Power BI to Adobe Experience Platform Query Service.

## Install Tableau

For Windows or Mac users

[Install Tableau Desktop](https://experienceleague.adobe.com/docs/experience-platform/query/clients/tableau.html) as per the documentation.

Tableau gives you a 14-day trial period automatically.

If you want to use Tableau beyond those 14 days, you'll need a license key.


---

# 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.adobesandbox.com/comprehensive-technical-tutorial-archive/module4/ex0.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.