Book Image

Mastering Qlik Sense

By : Juan Ignacio Vitantonio
Book Image

Mastering Qlik Sense

By: Juan Ignacio Vitantonio

Overview of this book

Qlik Sense is a powerful, self-servicing Business Intelligence tool for data discovery, analytics and visualization. It allows you to create personalized Business Intelligence solutions from raw data and get actionable insights from it. This book is your one-stop guide to mastering Qlik Sense, catering to all your organizational BI needs. You'll see how you can seamlessly navigate through tons of data from multiple sources and take advantage of the various APIs available in Qlik and its components for guided analytics. You'll also learn how to embed visualizations into your existing BI solutions and extend the capabilities of Qlik Sense to create new visualizations and dashboards that work across all platforms. We also cover other advanced concepts such as porting your Qlik View applications to Qlik Sense,and working with Qlik Cloud. Finally, you'll implement enterprise-wide security and access control for resources and data sources through practical examples. With the knowledge gained from this book, you'll have become the go-to expert in your organization when it comes to designing BI solutions using Qlik Sense.
Table of Contents (16 chapters)

Incremental loads

Incremental loads is a technique used with QVD files. This technique allows you to extract and store in a QVD file only new or modified records. Your source QVD will contain a replica of your source or sources and each time you execute the script, instead of regenerating the file from scratch, you have the possibility of only loading and storing those records that have been modified or are new.

For small sources, incremental loads might not make sense. However, most of the data nowadays is what we call "big". Loading and storing millions and millions of records on a daily basis is not convenient and it is in these cases where incremental loads play a starring role.

Incremental loads are typically used to perform one of the following operations:

  • Append
  • Insert
  • Insert and update
  • Insert, update, and delete