oved multiple data 
values efficiences may by now perhaps be obvious. -Having a single 
opaque, asignature data type even allows cross-format serialization / 
deserialization routines (XML, CSV, etc.) to update automatically. -One 
may even choose to name-mangle metadata to support enumerated version 
identifiers (etc.)<br><br><h2>Abstractions</h2><br>While we may achieve a
 similar independence with a properly designed abstraction, over time I 
have found the use of an EDT to be far more forgiving. 