The Lookup transformation contains values for input ports, the lookup, and output ports. If you enable a dynamic lookup cache, the output port values vary based on how you configure the dynamic lookup cache.
The Lookup transformation contains the following types of values:
Input value
Value that the Integration Service passes into the Lookup transformation.
Lookup value
Value that the Integration Service inserts into the cache.
Output value
Value that the Integration Service passes from the output port of the Lookup transformation. The output value of the lookup/output port depends on whether you choose to output old or new values when the Integration Service updates a row.