This tutorial explains how to connect Salesforce to Visio to export and manage Salesforce entity relationship (ER) diagrams. It provides instructions on installing the necessary DataDirect connector, setting up the connection in Visio, and using Visio's reverse engineering feature to automatically generate a physical data model from Salesforce with objects, fields, and relationships. The goal is to allow users to easily extract and modify Salesforce data models in a shareable Visio format.