► For Large (but scalable) projects, RAD requires sufficient resources to create the right number of RAD teams.
► RAD projects will fail if there is no commitment by the developers or the clients to ‘rapid-fire’ activities necessary to get a system complete in a much abbreviated time frame.
► If a system cannot be properly modularized, building components for RAD will be problematic
► RAD is not appropriate when technical risks are high, e.g. this occurs when a new application makes heavy use of new technology.
Since the RAD process emphasizes reuse, many of the program components have already been tested. This minimizes the testing and development time.
RAD assumes the use of the RAD fourth generation techniques and tools like VB, VC++, Delphi etc rather than creating software using conventional third generation programming languages. The RAD works to reuse existing program components (when possible) or create reusable components (when necessary). In all cases, automated tools are used to facilitate construction of the software.
The data objects defined in the data-modeling phase are transformed to achieve the information flow necessary to implement a business function. Processing descriptions are created for adding, modifying, deleting, or retrieving a data object.
The information flow defined as part of the business modeling phase is refined into a set of data objects that are needed to support the business. The characteristics (called attributes) of each object are identified and the relationships between these objects are defined.
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