In the following mapping, the QTY port in the Joiner transformation links to the QTY port in the Aggregator transformation. The Aggregator transformation references the QTY port in the expressions for TOTAL_QUANTITY and TOTAL_REVENUE:
You make the following changes to the QTY port in the Joiner transformation:
You change the port name QTY to QUANTITY.
You change the datatype from Decimal to Integer.
When you propagate forward the attributes, the Designer updates the following dependencies in the Aggregator transformation:
The Designer updates QTY port name to QUANTITY.
The Designer updates the reference to QTY port name in the expressions for the TOTAL_QUANTITY and TOTAL_REVENUE ports change to QUANTITY.
The Designer updates the datatype of QTY port name to Integer.