The main goal of this work is to develop an initial characterization
of an information systems design approach that we call implicit
invocation and to analyse its potential advantatges and
disadvantatges with respect to the conventional approach that we
call explicit invocation. Our work tries to contribute to this
approach at the specific field of object oriented design of
information systems. In our analysis we use an example that consist in
some simplified banking operations, that we use as basis for the
comparation of the alternative designs we explore. We characterize
what could be implicit invocation in information systems design, we
apply this characterization to the example, and we present a
comparative analysis of the two designs.Postprint (published version
