Transformations

What are 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
• Union Transformation
• Joiner Transformation
• Lookup Transformation
• Normalizer Transformation
• Transaction Control Transformation
• Rank Transformation
• Router Transformation
• Sequence Generator Transformation
• SQL Transformation
• Stored Procedure Transformation
• Sorter Transformation
• Update Strategy Transformation
• Source Qualifier Transformation
• Advanced External Procedure Transformation
• External Transformation

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