During a conference call with investors, CEO Edward D. Breen defended DuPontâs research spending, saying the firm will still be âone of the highest R&D companies in the world.â Breen noted âwe were very selectiveâ in making the R&D reductions.
System development methodologies are promoted as a means of improving the management and control of the software development process, structuring and simplifying the process, and standardizing the development process and product by specifying activities to be done and techniques to be used.
In the software development process, the top-down and bottom-up approaches play a key role. Top-down approaches emphasize planning and a complete understanding of the system. It is inherent that no coding can begin until a sufficient level of detail has been reached in the design of at least some part of the system.