Book Image

Learning Informatica PowerCenter 10.x - Second Edition

By : Rahul Malewar
Book Image

Learning Informatica PowerCenter 10.x - Second Edition

By: Rahul Malewar

Overview of this book

Informatica PowerCenter is an industry-leading ETL tool, known for its accelerated data extraction, transformation, and data management strategies. This book will be your quick guide to exploring Informatica PowerCenter’s powerful features such as working on sources, targets, transformations, performance optimization, scheduling, deploying for processing, and managing your data at speed. First, you’ll learn how to install and configure tools. You will learn to implement various data warehouse and ETL concepts, and use PowerCenter 10.x components to build mappings, tasks, workflows, and so on. You will come across features such as transformations, SCD, XML processing, partitioning, constraint-based loading, Incremental aggregation, and many more. Moreover, you’ll also learn to deliver powerful visualizations for data profiling using the advanced monitoring dashboard functionality offered by the new version. Using data transformation technique, performance tuning, and the many new advanced features, this book will help you understand and process data for training or production purposes. The step-by-step approach and adoption of real-time scenarios will guide you through effectively accessing all core functionalities offered by Informatica PowerCenter version 10.x.
Table of Contents (20 chapters)
Title Page
Credits
About the Author
Acknowledgement
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Chapter 6. Implementing SCD Using Designer Screen Wizards

Slowly Changing Dimensions (SCD), as the name suggests, allows maintaining changes in the Dimension table in the data warehouse. Before you read the chapter, make sure you have a complete understanding of data warehousing concepts, especially SCD. Make sure you know about SCD1, SCD2, and SCD3 types. For your reference, we have described each SCD in detail in this chapter. For more details, refer to the book The Data Warehouse Toolkit by Ralph Kimball. Before we move ahead with the implementation of the SCD in Informatica PowerCenter, let's discuss the different types of SCDs.

Note that we are taking the general SCD in our discussion, that is, SCD1, SCD2, and SCD3. Apart from these, there will always be Hybrid SCDs that you will come across. A Hybrid SCD is nothing but a combination of multiple SCDs to serve your complex business requirements.