This document discusses code for adding, updating, and deleting records from a database using buttons in VB.NET. It provides code examples for an Add New button that adds a new record to a binding source, an Update button that validates changes and updates all records in a table adapter, and a Delete button that removes the current record and updates the table if confirmed by the user. It also notes that an event handler is needed when leaving a row to save new records added with the Add New button.