to learn about the configuration, guidelines, usage, and run-time behavior of Informatica transformations. Transformations are repository objects that represent the operations that the Integration Service performs on a data.
Refer the guide to perform data operations to generate, change, or transfer data. View the support for each transformation depending on where and how you plan to run the mapping. Data passes through the transformation ports to targets and other transformations that you link in a mapping or mapplet. You can enter expressions using the Expression Editor in the active transformations. A transformation can have multiple input and output groups, which is a set of ports that define a row of incoming or outgoing data.