UML Profiles are used to specialize UML for particular application domains. For example, the OMG is currently standardizing UML Profiles for real time, for distributed applications and for CORBA components. An EJBprofile will soon be available. UML 1.4 will completely support UML profiles. Objecteering/UML extends this mechanism, by providing the user with a means of defining rules and processing, supported by a Java-like language, the J language.

Objecteering/UML Profile Builder is used to define new profiles, to associate them to UML extensions, generation rules, model transformation rules, consistency checking rules, activation menus, diagram construction rules and development generation work product rules. UML profiles are stored in a separate repository and can be implemented on Objecteering/UML projects.