The following is an example of how to get input from a user in order to query a back-end database and send the results back to the browser.

In this example, we are using a typical customer-invoice scenario. The request is to find invoices for certain customers.

The results are sent back to the browser with automatically generated links to drill down into the detail of the invoice. In this example, the country list is generated on-the-fly by reading the back-end data.

This type of automation saves hours of development time as well as simplifies maintenance of the web site going forward. Imagine having to construct a list that contains several hundred choices by hand! The types of criteria you can include to query your back-end data are completely up to you.