Use of USE Case Ivar Jacobson starts writing Usage Scenarios when defining the Ericsson AXE system. Jacobson, in the middle of the 1980s, spent a lot of effort to think about working methods for more than ten years. He created a term anvendningsfall, which is mostly "use of usage) or usage. But when published in English, he found that "Useage Case" speaks in English, so the principle of writing example "USE Case" Creating Use case is a Summit can be a scene, including action and interacting. The use case can be a set of scenes to describe the behavior of different scenes. This writing format can describe the behavior of variants, such as black box requirements, business processes, and system design descriptions. Do not have a system design case without the interface design case. Do not have a test case. Do not have test cases to describe the main scene of behavioral demand usage. Do not exceed nine. Sub-objective and removal design descriptions can be obtained at the appropriate level. The maximum value of the use case is not in the main scene, but is alternative. The main scene may only occupy one-quarter of one-quarter of the length of the case.
