When you view the data object read operation in the object editor, the object editor displays a source object and an output object. The source and output objects comprise the data object read operation. You edit the advanced and run-time properties in the output object.

The following image shows an example of a data object read operation for a Teradata data object where the source object is

EMPLOYEE

and the output object is

Output

:

After you create the data object read operation for the physical data object, you can create a Read transformation to add the physical data object as a source in the mapping workflow. When you add the physical data object to the mapping, you can specify the Read transformation and the data object read operation that you want to use.

The following image shows the wizard that appears when you add the Teradata data object to the mapping:

The Read transformation uses the properties that you configured in the output object of the data object read operation.