Examining Mapped Fields

Once you have selected the point at which one data stream or data source will be mapped to another, a dialog box is displayed for you to select fields for mapping or to ensure that the system default mapping is correct. If essential fields have been set for the stream or data source and they are unmatched, these fields are displayed in red. Any unmapped fields from the data source will pass through the Filter node unaltered, but note that you can map non-essential fields as well.

Original. Lists all fields in the template or existing stream—all of the fields that are present further downstream. Fields from the new data source will be mapped to these fields.

Mapped. Lists the fields selected for mapping to template fields. These are the fields whose names may have to change to match the original fields used in stream operations. Click in the table cell for a field to activate a list of available fields.

If you are unsure of which fields to map, it may be useful to examine the source data closely before mapping. For example, you can use the Types tab in the source node to review a summary of the source data.