You can also create a new SQLstream stream for use as a sink.
To do so:
The Edit RSS/Atom Source page opens. By default, StreamLab uses the project schema for the new source. You can also select a schema from the pulldown menu on the left.
StreamLab also assigns a default name to the sink. You can edit this name by clicking the Sink Name field to the right of the Schema pulldown menu.
Add columns for the sink. These should be mappable to the source for which this sink will serve as output.