Wim Bast

Anneke Kleppe is a consultant and adviser at Klasse Objecten, which she founded in 1995 to train and coach companies on the use of object technology, modeling, and MDA. She was intensively involved in the development of the Unified Modeling Language (UML) and the new UML 2.0 standard. The author of several books, Anneke started a knowledge center for object technology at KPN Research in Leidschendam, Netherlands. She is a member of the authoring team of the OCL 2 standard, where she has a special focus on the definition of the semantics of the OCL.

Jos Warmer is the primary author of the OCL standard. He is an active member of the Unified Modeling Language (UML) Revision Task Force, which defined the revisions in the UML 2.0 standard. Previously he was a member of the UML core team, where he was responsible for the development of the Object Constraint Language (OCL). The author of several books and numerous international articles, Jos is an advisor on the UML method and techniques at the De Nederlandsche Bank.

Anneke Kleppe

Anneke Kleppe (A.Kleppe@klasse.nl) has more than seven years of experience with object technology. Currently she is an independent consultant with her own company, Klasse Objecten, where she coaches and trains companies working with object technology.

Jos Warmer

Jos Warmer (JWarmer@nl.ibm.com) is the primary author of the OCL standard (contributed by IBM) that is included as part of the UML standard. He is currently working as senior consultant within IBM's European Object Technology Practice (OTP). Before joining IBM, he worked as a trainer, mentor, and consultant, instructing many IT professionals in object technology.