Book Image

QlikView 11 for Developers

Book Image

QlikView 11 for Developers

Overview of this book

Business Intelligence technologies are a must-have in every business to make informed decisions and keep up-to speed with the ever-evolving markets. QlikView's disruptive technology makes it a key player and leader in the industry; with its flexibility and powerful analytics environment, building QlikView apps can be mastered by both, business users as well as developers. This book will help you learn QlikView Development from a basic to a practitioner level using a step-by-step approach in a practical environment, and apply proven best practices on each topic. Throughout the book, we will build a QlikView app based on real data about Airline Operations that will help "HighCloud Airlines" make informed business decisions and analysis-guided strategies. HighCloud Airlines executives are evaluating if entering the US market is a good strategy and, if so, which line of business should they focus their investments on; they need QlikView to make the best decision. The application will be evolving chapter by chapter, along with your skills, going from a simple proof of concept to creating a Data Model, adding a custom style, building a Dashboard and handling and manipulating the source data via script. We will meet the "HighCloud Airlines" requirement by using many different data visualization objects and time-saving techniques. The whole application uses real data taken from the Bureau of Transportations statistics of the US and encompasses the operations of Airlines both domestic and international. With three years worth of data, you will help HighCloud Airlines discover where people travel the most, which are the Carriers with the most market share, what is the average load factor per airline, which aircraft is the most used to perform flights, which are the busiest airports, and a whole universe of new insights.
Table of Contents (23 chapters)
QlikView 11 for Developers
Credits
Foreword
About the Authors
Acknowledgements
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 11. Set Analysis and Point In Time Reporting

Comparing performance metrics over a period of time is one of the most fundamental tasks expected from any BI solution. There are a few ways to deliver these sort of comparisons in QlikView, but the most flexible and dynamic ones involve the use of Set Analysis. Set Analysis, by itself, is a powerful tool that can be used for not only for Point In Time Reporting, but for many other complex calculations.

In this chapter, we will expand on what we've learned from all of the previous chapters, and introduce the following new concepts:

  • Set Analysis and modified record sets

  • Point In Time Reporting

  • Comparative analysis with alternate states

We will approach these topics with the use of some practical examples. Given the harshness of the syntax we are going to use, and the complexity of the expressions that can be built with Set Analysis, we recommend you to have a lot of patience and dedication to the subject at hand. Even with the best reference...