Though
we agree that DW design would undoubtedly benefit from adopting a patternbased
approach, and we also recognize the utility of patterns in increasing the
effectiveness of teaching how to design, we believe that further research is
necessary in order to achieve a more comprehensive characterization of multidimensional
patterns for both conceptual and logical design.
??? Modeling.security: Information security is a serious requirement that must be
carefully considered in software engineering, not in isolation but as an issue
underlying all stages of the development life cycle, from requirement analysis
to implementation and maintenance. The problem of information security is
even bigger in DWs, as these systems are used to discover crucial business
information in strategic decision making. Some approaches to security in
DWs, focused, for instance, on access control and multilevel security, can be
found in the literature (see, for instance, Priebe & Pernul, 2000), but neither
of them treats security as comprising all stages of the DW development cycle.
Besides, the classical security model used in transactional databases, centered
on tables, rows, and attributes, is unsuitable for DW and should be replaced by
an ad hoc model centered on the main concepts of multidimensional modeling
??”such as facts, dimensions, and measures.
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