Performance! data records are organized within a three-tier structure. This structure is organized in a way similar to the one shown in next page.

You may create any number of customers in the database. Each customer may have a number of projects, and each project may have a number of valves. In order to create a valve, you must first create a customer and project to contain that valve. Once customers and projects are created, use the Valve Manager dialog to create, modify, delete, print, and price valve records. Customers and projects may not be deleted in the Valve Manager. Operations on Customers and Projects can be completed in the Customer List / Project List dialogs.