19. The method of claim 7 , wherein said logical model is an XML schema, said logical message components comprise XML schema components, said logical message component classes comprise a global element class defining a logical structure for said message, and wherein said message class is associated with said global element class.
19. The method of claim 7 , wherein said logical model is an XML schema, said logical message components comprise XML schema components, said logical message component classes comprise a global element class defining a logical structure for said message, and wherein said message class is associated with said global element class. 22. The method of claim 19 wherein said logical message component classes further comprise a complex type definition class and a group definition class and wherein said physical meta-model further comprises an extension class for extending said complex type definition class or group definition class, said extension class defining a content kind attribute indicating that a bit stream representation of a message for which a logical structure has been defined in said logical model contains all elements defined in said logical structure.