What is the difference between Lookup and Main?
"Main" is the one and only connection you can build from an input component to your o/p component via tmap or any other components.
every second input connection you make to your intermediate(tmap) or o/p component falls under lookup category.
Refer the below link for more information on how lookup works
Thank you for your answer.
My job's main and Lookup are using joblet as a data source,but the Main joblet must use a tOracleConnection or other DB connection component to read the data,therefore,I want to know the difference between lookup and main.
Introduction to Talend Open Studio for Data Integration.
Practical steps to developing your data integration strategy.
Create systems and workflow to manage clean data ingestion and data transformation.