Book Image

Pentaho 3.2 Data Integration: Beginner's Guide

Book Image

Pentaho 3.2 Data Integration: Beginner's Guide

Overview of this book

Pentaho Data Integration (a.k.a. Kettle) is a full-featured open source ETL (Extract, Transform, and Load) solution. Although PDI is a feature-rich tool, effectively capturing, manipulating, cleansing, transferring, and loading data can get complicated.This book is full of practical examples that will help you to take advantage of Pentaho Data Integration's graphical, drag-and-drop design environment. You will quickly get started with Pentaho Data Integration by following the step-by-step guidance in this book. The useful tips in this book will encourage you to exploit powerful features of Pentaho Data Integration and perform ETL operations with ease.Starting with the installation of the PDI software, this book will teach you all the key PDI concepts. Each chapter introduces new features, allowing you to gradually get involved with the tool. First, you will learn to work with plain files, and to do all kinds of data manipulation. Then, the book gives you a primer on databases and teaches you how to work with databases inside PDI. Not only that, you'll be given an introduction to data warehouse concepts and you will learn to load data in a data warehouse. After that, you will learn to implement simple and complex processes.Once you've learned all the basics, you will build a simple datamart that will serve to reinforce all the concepts learned through the book.
Table of Contents (27 chapters)
Pentaho 3.2 Data Integration Beginner's Guide
Credits
Foreword
The Kettle Project
About the Author
About the Reviewers
Preface
Index

Time for action – deleting data about discontinued items


Suppose a manufacturer informs you about the categories of products that will no longer be available. You don't want to have in your database products something that you will not sell. Then you use PDI to delete them.

  1. From the Packt website, download the LUX_discontinued.txt file.

  2. Create a new transformation.

  3. With a Text file input step, read the file.

  4. Preview the file. You will see the following:

  5. After the Text file input step, add an Add constants step to add a String constant named man_code with value LUX.

  6. Expand the Output category of steps and drag a Delete step to the canvas.

  7. Create a hop from the Add constants step to the Delete step.

  8. Double-click the Delete step. Select js as Connection and, as Target table, browse and select products. In the grid add the conditions man_code = man_code and pro_theme LIKE category. After the Delete step, add a Write to log step.

  9. Right-click the Delete step and define the error handling just like you...