Architecting the Migration Solution
The first task in the AIM methodology is to determine which of the key migration techniques should be applied to each of the source components. This determination requires a component model specific to the purpose of migration planning, that is, a component/technique map. The second output from such a component model is the definition of the scope of the migration. If a software component or function is not a member of the agreed-on component model, it is considered to be out of scope.
The key migration techniques used at the organization in our case study included a rehosting approach, supplemented by replacement and reverse engineering. The key rehosting techniques involved reusing GEAC and Sybase's platform ...
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