Transformations-Basics1

Informatica - Transformations


In Informatica, Transformations help to transform the source data according to the requirements of target system and it ensures the quality of the data being loaded into target.
Transformations are of two types: Active and Passive.


Active Transformation

An active transformation can change the number of rows that pass through it from source to target i.e it eliminates rows that do not meet the condition in transformation.


Passive Transformation

A passive transformation does not change the number of rows that pass through it i.e it passes all rows through the transformation.

Transformations can be Connected or UnConnected.


Connected Transformation

Connected transformation is connected to other transformations or directly to target table in the mapping.


UnConnected Transformation

An unconnected transformation is not connected to other transformations in the mapping. It is called within another transformation, and returns a value to that transformation.


Following are the list of Transformations available in Informatica:
Aggregator Transformation

Expression Transformation

Filter Transformation

Joiner Transformation

Lookup Transformation

Normalizer Transformation

Rank Transformation

Router Transformation


Sequence Generator Transformation

Stored Procedure Transformation

Sorter Transformation

Update Strategy Transformation

XML Source Qualifier Transformation

Advanced External Procedure Transformation

External Transformation


In the following pages, we will explain all the above Informatica Transformations and their significances in the ETL process in detail.