are of the "founding fathers" of UML. They invented UML, the basis for UML, along with Booch notation. Their first edition was crucial to the development and adoption of Object-Oriented methods when they were in their infancy. Blaha is a worldwide consultant and is a partner with Modelsoft Consulting, and SentientPoint Corporation. He is active in the IEEE Computer Society. Rumbaugh is a Distinguished Engineer with the Rational brand of IBM and is one of the original co-designers of UML. He is a highly influential author.