Classification of transformations

At this point, we have seen quite a few transformations and their functionality. Before we take the next transformations, let's talk about classification of transformations. The transformations based on their connectivity with other components are divided as Connected or Unconnected. The transformation based on the number of records at the input and output ports are divided as Active or Passive.

Let's first discuss Active and Passive Classification.

Active and Passive

This classification of transformations is based on the number of records at the input and output ports of the transformation. This classification is not based on the number of ports or the number of groups.

If the transformation does not change the number of records at its input and output ports, it is said to be a Passive transformation. If the transformation changes the number of records at the input and output ports of the transformation, it is said to be an Active transformation. Also, if the...