Configure the following components on the Ports tab:
Name of the port.
Datatype, precision, and scale.
Configure the datatype and set the precision and scale for each port.
A port can be input, output, input/output, or variable. The input ports receive data and output ports pass data. The input/output ports pass data unchanged. Variable ports store data temporarily and can store values across the rows.
Use the Expression Editor to enter expressions. Expressions use the transformation language, which includes SQL-like functions, to perform calculations.