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.
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