Book Image

SAP Data Services 4.x Cookbook

Book Image

SAP Data Services 4.x Cookbook

Overview of this book

Want to cost effectively deliver trusted information to all of your crucial business functions? SAP Data Services delivers one enterprise-class solution for data integration, data quality, data profiling, and text data processing. It boosts productivity with a single solution for data quality and data integration. SAP Data Services also enables you to move, improve, govern, and unlock big data. This book will lead you through the SAP Data Services environment to efficiently develop ETL processes. To begin with, you’ll learn to install, configure, and prepare the ETL development environment. You will get familiarized with the concepts of developing ETL processes with SAP Data Services. Starting from smallest unit of work- the data flow, the chapters will lead you to the highest organizational unit—the Data Services job, revealing the advanced techniques of ETL design. You will learn to import XML files by creating and implementing real-time jobs. It will then guide you through the ETL development patterns that enable the most effective performance when extracting, transforming, and loading data. You will also find out how to create validation functions and transforms. Finally, the book will show you the benefits of data quality management with the help of another SAP solution—Information Steward.
Table of Contents (19 chapters)
SAP Data Services 4.x Cookbook
About the Author
About the Reviewers

Using database functions

There is no great variety of functions in this area. Data Services encourages you to communicate with database objects and control the flow of data within a dataflow.

How to do it…

You will learn a little more about the functions here.


First, let's look at the key_generation() function. This is the function the can be called only from the dataflow (when used in column mapping), so we are not interested in it at this point as we cannot use it in the Data Services scripts.

This function is actually similar to the Key_Generation transform object that can be used as part of a dataflow as well, and it is used to lookup the highest key value from a table column and generate the next one. This is often used to populate the key column of the new record with the unique values before inserting this record to a target table. We will take a closer look at the Key_Generation transform in the upcoming chapters.


This function is used to calculate the total...