| 11. | As a result, legacy systems are typically modernized incrementally.
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| 12. | Legacy systems & services need to be modified in order to be tested on cloud.
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| 13. | Andreas Hein, from the University of Stuttgart, researched the use of legacy systems in space exploration.
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| 14. | Legacy systems may perform adequately even though they were not professionally designed as a coherent system.
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| 15. | The main challenge is that there are often many desktop tools, some new, some legacy system.
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| 16. | The service framework must also respect legacy systems.
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| 17. | Though the original proposal included a downgrading mechanism for legacy systems, this has now been dropped.
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| 18. | Using this top ontology as a basis, a systematic process for re-engineering legacy systems was developed.
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| 19. | An RCS emulation layer is also planned for CVSNT / EVS 3.1 to support legacy systems.
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| 20. | And com-panies will still need people for general maintenance of their legacy systems long after 2000.
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