What is active transformation in Informatica?

Informatica transformations are repository entities that can read, change or pass data to the defined target structures like tables, files, or any other structures required. Active transformations are those which alters the data rows and the number of input rows passed to them.

Aggregator, filter, joiner, normalizer, etc. are a few examples of active transformation in Informatica. An active transformation can perform any actions; change the number of rows that passes through the transformation, change the transaction boundary, change the row type attribute.