Patrick McCaffreyPractice Director, Business AnalyticsJohn Daniel Associates, Inc. Patrick’s Profile The majority of Qlik application developers will tell you that a large portion of their time is spent doing rework for customers who consistently change the scope of work. This can be very frustrating, especially after hours of work have been spent placing business logic in numerous complex expressions and the customer comes to you and asks you for something as simple as the addition of a “Product Type.” To the…