Ivar Jacobson
Ivar Hjalmar Jacobson (Swedish pronunciation: [ˈǐːvar ˈjɑ̂ːkɔbˌsɔn] ; born September 2, 1939) is a Swedish computer scientist and software engineer, known as a major contributor to UML, Objectory, Rational Unified Process (RUP), aspect-oriented software development, and Essence. == Biography == Ivar Jacobson was born in Ystad, on September 2, 1939.