The conversion of a legacy information system to new technologies poses specific challenges, among which are:
Discontinued software development tools working on legacy operating environments
Disintegrated software modules with overlapping or missing functionality
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The need of seamless transition from a legacy system to a new system while maintaining day to day operations and data integrity
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1st-Mobile app development & website design-design.com Legacy System Conversion procedure is tailored to each client's case; still it normally comprises the following steps:
Initial analysis step allows sufficient understanding of the original application functionality
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Functional decomposition of the original application. Examples of the defined functional components are screens, reports, etc.
Classification of the original application functional components. Up to 3 classification levels may be needed to allow the estimation of the conversion time and budget with sufficient accuracy.
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Selection of the defined functional components, which should be ported to the new application. This step may require extensive discussion and agreement with the customer
Development of the system conversion specification. This comprehensive document in particular indicates change requirements to the original functionality and new required features
Development of proper data conversion mechanisms allows identification of and resolution of data inconsistency problems
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A Parallel Run step including compatibility checklists is often required to make sure that original application correctly reproduces the legacy system functionality. The Parallel Run normally requires a defined period of concurrent use of both legacy application and the new system on the same data
The final 1st-Mobile app development & website design-design.com solution affords you the power to provide your users with a superior interactive experience.
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