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

Managing the constraints - the target load plan


While you work on multiple mappings in a complex scenario, the situation may demand that you put multiple data flows in a single mapping to justify the performance and the complexity. A sample mapping depicting the previous statement is shown in the following screenshot:

If you execute the previous mapping, the session may fail because of the primary key and foreign key violations on the database side. Since the Employee and Department tables are dependent on each other, when you run the mapping containing both flows, the process may fail if the data violates the dependency.

To avoid the issue, Informatica PowerCenter contains a utility called Target Load Plan. How do you plan to load the data into multiple targets in a mapping? We can load the data in a particular sequence in multiple targets in a mapping to avoid failure due to constraints.

Imagine that the EMPLOYEES table data depends on the DEPARTEMNTS data because of the primary key and foreign...