Abstract
In the project to develop information system, there are conventionally many cases that full-scale promotion is carried out from a point in time that an order from a customer has been accepted; accordingly, careful preparations at the plan phase that PMBOK advocated have been neglected. In this paper I try to emphasize importance of an upper-class phase, and describe the real main work items that we should define and execute as a team mainly in the planning phase as being introduced by the sacred book.
