Lookup stage: Input and Output tab (DataStage®)
Input tab
Review the input columns in the Columns section. The Advanced section allows you to change the default buffering settings for the input link.
Output tab
The Lookup stage can have only one output link. It can also have a single reject link, where records can be sent if the lookup fails. The Output name list allows you to choose whether you are looking at details of the main output link (the stream link) or the reject link.
The Advanced tab allows you to change the default buffering settings for the output links.