Data Transformation Engine Map Designer Reference Guide

Chapter 12 - Managing Maps Editing a Card
Map Designer Reference Guide
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Not all modifications to an input type will affect map rules. For example, if you add
a component to an input type, map rules are not affected. Also, if you delete an
input component that is not referenced in a map rule, the map rules are not
affected.
Changing the Type of an Output Card
You can change the type (TypeName) of an output card. Changing the type of an
output card retains the map rules for the objects that still exist within the card
object, even if they are in a different order.
♦ If there was a map rule on an object that no longer exists in the card object,
that map rule becomes unresolved.
♦ If there is a map rule on a data object that still exists in the card object, the
map rules are retained .
Even though the order of the output components changed, the map rules stay
intact.
Changing the Type Tree of a Card
The type tree of a card can be changed. Optionally, you can change the type tree
of all the cards in that map and in referenced maps that use the previous tree.
When the TypeTree for a card is changed, a confirmation message appears to ask
if you want to replace all references to that tree with the new tree.
There are some situations in which you would not want to replace all references to
the type tree. For example, if only the input had changed to the definitions in the
selected type tree, you would not want the output to change.