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QlikView for Developers

QlikView for Developers

By : Miguel Angel Garcia, Barry Harmsen
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QlikView for Developers

QlikView for Developers

4 (3)
By: Miguel Angel Garcia, Barry Harmsen

Overview of this book

QlikView is one of the most flexible and powerful Business Intelligence platforms around. If you want to build data into your organization, build it around QlikView. Don't get caught in the gap between data and knowledge – find out how QlikView can help you unlock insights and data potential with ease. Whether you're new to QlikView or want to get up to speed with the features and functionality of QlikView, this book starts at a basic level and delves more deeply to demonstrate how to make QlikView work for you, and make it meet the needs of your organization. Using a real-world use-case to highlight the extensive impact of effective business analytics, this book might well be your silver bullet for success. A superb hands-on guide to get you started by exploring the fundamentals of QlikView before learning how to successfully implement it, technically and strategically. You'll learn valuable tips, tricks, and insightful information on loading different types of data into QlikView, and how to model it effectively. You will also learn how to write useful scripts for QlikView to handle potentially complex data transformations in a way that is simple and elegant. From ensuring consistency and clarity in your data models, to techniques for managing expressions using variables, this book makes sure that your QlikView projects are organized in a way that's most productive for you and key stakeholders.
Table of Contents (17 chapters)
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16
Index

Creating the Reports sheet


Now that we've created our Dashboard and Analysis sheets, it is time to create the final sheet from our DAR setup: the Reports sheet.

As was defined in the requirements, we will be creating the following objects:

  • Aggregated flights per month

  • KPIs per carrier

But before we begin creating new objects, let's first take a quick look at how we can re-use the expressions that we have created earlier.

Variables

By now you may have noticed that we are using the same expressions in many places. While we could simply type in the same expression every time, this approach has two disadvantages:

  • We risk introducing (minor) variations in the way expressions are calculated. For example, one "revenue" expression might contain sales tax while another does not.

  • It makes maintenance harder; if the way an expression is calculated changes we'd have to change it in many different places in our document, though the Expression Overview window can help us simplify that task.

Enter variables. Variables...

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QlikView for Developers
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