Answer / Ila Agarwal

Connected Lookup: It performs a lookup on the target table using a join condition. The connection between the source and target is maintained during the lookup process. If no matching record is found, the system will generate an error. Unconnected Lookup: It performs a lookup without establishing a connection to the target table. This means that it does not join the source data with the target table but simply retrieves the values from the static cache of the target column. If no matching record is found in the static cache, the system will return NULL.

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