Book Image

Learning Pentaho Data Integration 8 CE - Third Edition

Book Image

Learning Pentaho Data Integration 8 CE - Third Edition

Overview of this book

Pentaho Data Integration(PDI) is an intuitive and graphical environment packed with drag-and-drop design and powerful Extract-Tranform-Load (ETL) capabilities. This book shows and explains the new interactive features of Spoon, the revamped look and feel, and the newest features of the tool including transformations and jobs Executors and the invaluable Metadata Injection capability. We begin with the installation of PDI software and then move on to cover all the key PDI concepts. Each of the chapter introduces new features, enabling you to gradually get practicing with the tool. First, you will learn to do all kind of data manipulation and work with simple plain files. Then, the book teaches you how you can work with relational databases inside PDI. Moreover, you will be given a primer on data warehouse concepts and you will learn how to load data in a data warehouse. During the course of this book, you will be familiarized with its intuitive, graphical and drag-and-drop design environment. By the end of this book, you will learn everything you need to know in order to meet your data manipulation requirements. Besides, your will be given best practices and advises for designing and deploying your projects.
Table of Contents (17 chapters)

Summary


In this chapter, you learned techniques to construct Transformations in different ways. First, you learned all about Kettle variables. By understanding how to define and use them, you can develop more flexible and reusable Transformations. After that, you created and used sub-transformations or mappings, another way to create reusable work. Then you were introduced to the mechanism of copying and getting rows, which you will revisit in the next chapters. Finally, you learned to iterate over transformations using the Transformation Executors.

There are still more possibilities to give power to your Transformations. One of them is about creating dynamic Extracting, Transforming, Loading (ETL) processes. You will learn about this in the next chapter.