Data Transformation Engine Design Studio Tutorial

Design Studio Tutorial
105
Chapter 4 - Using the UNIQUE
Function
The ContactToFullLabel map created in Chapter 3 maps a file of multiple contact
records to a file of multiple labels. After analyzing the output, it is clear that some
of the contact records in the address file occur multiple times.
Objectives
This exercise copies and modifies an existing map, and introduces the UNIQUE
function.
By completing the exercises for Chapter 4, you will learn how to:
♦ Modify an existing map.
♦ Copy an input card to create a new map.
♦ Copy an input card to an output card.
♦ Edit card settings.
♦ Use the
UNIQUE function to avoid creating duplicate records.