Data Transformation Engine Map Designer Reference Guide

Chapter 8 - Functional Map Basics Functional Maps
Map Designer Reference Guide
138
Basic Steps in Using a Functional Map
The basic steps to follow in using a functional map are listed below:
1 Determine that you want or need to use a functional map.
2 Determine the input argument(s) of the functional map.
3 Enter the map rule that references the functional map.
4 Create the functional map.
5 Create the input card(s).
6 Create the output card(s).
7 Enter map rules in the functional map.
Note The Functional Map Wizard eliminates Steps 5 and 6.
The Functional Map and Execution Map are in the Same Map
Source File
A functional map and the executable map that calls it must be in the same map
source file (.mms).
An example of a functional map is shown below. A data file contains statistics for
different kinds of cars:
Marlin 22 2 27 11 2930
Pacer ZSX 17 3 26 11 3350
Wildcat 22 3 18 12 2640
Fantasia DX 17 3 27 15 2830
La Vella 23 2 28 11 2070
Blue Baron 25 2 26 12 2650
Cavalino 20 4 29 16 3250
Each record in the file represents a car. For each car, there are fields for mileage,
head room, rear seat, trunk room, and weight. Each field is padded to a specific
length. The record is fixed.