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 (23 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Running transformations from a Job


In the previous chapters, you were introduced to PDI transformations, the PDI artifacts meant to deal with data. Usually, you don't run a PDI Transformation isolated; you embed it in a bigger process. Here are some examples:

  • Download a file, clean it, load the information of the file in a database, and fill an audit file with the result of the operation
  • Generate a daily report and transfer the report to a shared repository
  • Update a data warehouse. If something goes wrong, notify the administrator by an email

All these examples are typical processes in which a Transformation is only a part. These types of processes can be implemented by PDI jobs. In particular, one of the tasks of those jobs will be executing one or more transformations. This execution can be done with a special Job entry, the transformation entry.

Using the Transformation Job Entry 

In this section, you will learn how to run a Transformation from a Job. For this tutorial, we will use the Transformation...