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Informatica - What is the main difference between a Joiner Transformation and Union Transformation?




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asked marvit September 20, 2014 08:04 AM  

What is the main difference between a Joiner Transformation and Union Transformation?


           

1 Answers



 
answered By Mswami   0  
Joiner:

  •     Using joiner we can remove duplicate rows
  •     Joiner can be Normal,Right Outer,Left Outer,Full Outer Join
  •     In Joiner we have one input group and one output group
  •     Joiner implemented by using Joiner Transformation in Informatica.
  •     Joiner Transformation combines data record horizontally based on a join condition.

Union:

  •     Union will not remove duplicate rows
  •     Union is equivalent to UNION ALL in SQL
  •     In Union we have multiple input groups and one output group.
  •     Union implemented by using Union Transformation in Informatica
  •     Union Transformation combines data record vertically from multiple sources
  •     Union also supports heterogeneous(different sources).
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