How-to video: Create an InfoPath form that stores form data in SQL
Part 1: Create a web-enabled InfoPath form that stores form data directly in SQL
Part 2: Create data view web parts in SharePoint Designer to display/update SQL data in SharePoint pages
This SharePoint video tutorial is based on a simple concept: Store customer suggestions for product improvement or new product ideas in SQL and create a SharePoint page to find, filter, view, and manage the task of implementing the good suggestions.
Data view/data form web parts to display/update SQL data
Here is parts 1 and 2 of the tutorial video combined: