Objectory Systems was a software company based in Sweden that was instrumental in the development of Object-oriented program design. Founded in 1987 by Ivar Jacobson

Ivar Jacobson

Ivar Hjalmar Jacobson is a Swedish computer scientist, known as major contributor to UML, Objectory, RUP and aspect-oriented software development.- Biography :...

, the company developed ObjectOry, an object-oriented development method which was an extension of what is known as the Ericsson Approach, a modeling language

Modeling language

A modeling language is any artificial language that can be used to express information or knowledge or systems in a structure that is defined by a consistent set of rules...

 developed at Ericsson

Ericsson

Ericsson , one of Sweden's largest companies, is a provider of telecommunication and data communication systems, and related services, covering a range of technologies, including especially mobile networks...

. This language featured state charts with activity diagrams, as well as sequence diagram

Sequence diagram

A sequence diagram in Unified Modeling Language is a kind of interaction diagram that shows how processes operate with one another and in what order. It is a construct of a Message Sequence Chart....

s.

In 1991, Ericsson purchased a substantial amount of the stake in Objectory Systems. As a result, Objectory Systems became known as Objectory AB — a subsidiary of Ericsson. In 1995, Rational Software Corporation acquired the subsidiary.

External links

• What You Didn’t Know About RUP a Jacobson presentation about RUP — Rational Unified Process
  Rational Unified Process
  The Rational Unified Process is an iterative software development process framework created by the Rational Software Corporation, a division of IBM since 2003...
  
  
• Use Cases: Yesterday, Today, and Tomorrow