Ivar Jacobson
| Ivar Jacobson | |
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| Born | Ivar Hjalmar Jacobson September 2, 1939 Ystad, Sweden | 
| Nationality | Swedish | 
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| Website | www | 
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.