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What is Lookup transformation?

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What is Lookup transformation?

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  • Lookup transformation is used to look up a source, source qualifier, or target in order to get relevant data.
  • It is used to look up a ‘flat file’, ‘relational table’, ‘view’ or ‘synonym’.
  • Lookup can be configured as Active or Passive as well as Connected or Unconnected transformation. 
  • When the mapping contains the lookup transformation, the integration service queries the lookup data and compares it with lookup input port values. One can use multiple lookup transformations in a mapping.
  • The lookup transformation is created with the following type of ports:
    • Input port (I)
    • Output port (O)
    • Look up Ports (L)
    • Return Port (R)
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