As necessidades informacionais dos usuários no planejamento e modelagem de sistemas de informação 1

The work presents the main methodological and theoretical aspects of planning and how it is integrated with the necessities of the information systems. Concerning the evolution of planning, the project points out the reference mode ls and environmental varieties that put pressure on the decision making process, taking int o consideration mainly the necessities of users. It ends indicating the essential elements fo r the planning of information systems which goal is to observe the necessity of environmental m onitoring for answering the demands.