5. 1 What is UMl? The Unified Modelling language is a standard graphical language for modelling object oriented software At the end ofthe 1980s and the beginning of 1990s, the first object- oriented development processes appeared The proliferation of methods and notations tended to cause considerable confusion Two important methodologists Rumbaugh and Booch decided to merge their approaches in 1994 They worked together at the Rational Software Corporation In 1995, another methodologist, Jacobson, joined the team -His work focused on use cases In 1997 the Object Management Group(OMG) started the process ofuml standardization www.oseng.com O Lethbridge/Laganiere 2001 Chapter 5: Modelling with classes© Lethbridge/Laganière 2001 Chapter 5: Modelling with classes 2 5.1 What is UML? The Unified Modelling Language is a standard graphical language for modelling object oriented software • At the end of the 1980s and the beginning of 1990s, the first object￾oriented development processes appeared • The proliferation of methods and notations tended to cause considerable confusion • Two important methodologists Rumbaugh and Booch decided to merge their approaches in 1994. —They worked together at the Rational Software Corporation • In 1995, another methodologist, Jacobson, joined the team —His work focused on use cases • In 1997 the Object Management Group (OMG) started the process of UML standardization