  The domain of analysis and conception of Decisional Information System (DIS)
is, highly, applying new techniques and methods to succeed the process of the
decision and minimizing the time of conception. Our objective in this paper is
to define a group of patterns to ensure a systematic reuse of our approach to
analyse a DIS s business requirements. We seek, through this work, to guide the
discovery of an organizations business requirements, expressed as goals by
introducing the notion of context, to promote good processes design for a DIS,
to capitalize the process and models proposed in our approach and systematize
reuse steps of this approach to analyze similar projects or adapt them as
needed. The patterns are at the same time the process s patterns and product s
patterns as they capitalize models and their associated processes. These
patterns are represented according to the PSIGMA formalism.
