Prerequisite matrix in decision-making process through the Business Systems Planning (BSP) study of the Public Health Institute of Split.

Any BSP study results in information architecture and information system development priorities. However, in the decision-making process it is observed that one important factor is not included--prerequisites of performance of each individual information subsystem. This work presents the new additional approach to the decision-making process by so called Prerequisite Matrix as well as application of it to a BSP study of the Ideational Project Health Information System of the Public Health Institute of Split. As a result, we have dynamic priorities of subsystems which contribute to the optimal established information system development as a whole.