Examples of operator derivations with options

Including schema variables in an interface schema
Many operators pass an entire record unchanged from the input data set to the output data set. These operators can add new result fields to the record of the output data set, but they also propagate the original record through to the output data set.

The transfer mechanism
A transfer performs an optimized field-by-field copy of the current input record to the current output record.

Example: Working with dynamic interface schemas
The example operator specifies a schema variable for both the input and the output interface schema. In addition, when you instantiate the operator, you must specify two fields of its input interface schema.