Drill down reports are a compelling feature in business intelligence. It is the capability that takes the user from a more general view of the data to a more specific one at the click of a mouse. For instance, a report that shows sales revenue by branch offices enables the user to select a country, click on it, and see sales revenue by a specific city within that country. Unlike other forms of reporting, drill down reports boast vertical architecture, which reduces the number of clicks to the bare minimum. It turns the readers’ attention to the specific data they are interested in.