How to build an information system application to the health domain

Computer based information systems aim at improving knowledge, evaluation and management processes. Such tools are still developing in the non-profit sector. This paper aims at: a) reminding how to evolve from data to management information systems b) describing how to build a population based health information system c) describing the concepts required for conceiving a retrieval system and a system for inserting data d) documenting the importance of conceiving the system not only from a user driven perspective, but also taking into account the requirements of an information management system.