For years, there has been considerable debate about the meaning of "work based on" or "derivative work" in the softwarecontext.
多年来，对于在软件这一前提下“基于……的产品”或“衍生产品”这两个术语的含义有相当多的争议。
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Based on geographical and spatial database and supported by computer hardware and softwarecontext, GIS implements to acquire, manage, operate, analyze, simulate and display spatial data.
In this article, the third and final installment in a series of articles on MDA, we will explore those changes and MDA's application within a modern software development context.