A structured UDT is a collection of fields called attributes, each of which is defined as a predefined data type or other UDT (which allows nesting).
Example
If Address is defined as a UDT with sub‑fields for Street, Apartment, City, State, and Zip Code, provide Transform functions to convert input and output data into and from an Address object. Input and output data as a string with all the fields concatenated, using fixed field lengths or a delimiter such as a comma between them.