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In traditional software engineering techniques no SDLC was followed . advantage of reverse software engineering was that we can go back to any previous stage if we have missed something.
SDLC has both verification and validation activities where as STLC has only validation activity. Simply STLC is a part of SDLC
explain spiral model in sdlc
SDLC stages by taking example of EDP department SDLC stages by taking example of EDP department
SDLC refers to a stage all systems naturally undergo, a methodology refers to an approach invented by humans to manage the events naturally occurring in the SDLC
There are usually two design stages in SDLC. They are:High-level Design &Low-level Design
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See the graph in the related link. It clearly separates out the differences between PDLC and SDLC.
The reason why you might not find differences in the sdlc and rad is because RAD is a more sped-up version of the SDLC. RAD is typically used in small to medium size projects, while the SDLC is generally used for large projects. Another difference is that in the SDLC, one can control the scope creep of the project, whereas that is very limited when one implements RAD because you give it up for faster implementation times. In RAD you have alot of feedback from the user to refine the program more to the aspects of the user, whereas you dont get the same user input in the SDLC. This feedback loop is another reason that RAD is sometimes chosen over the SDLC
Actually - all phases of SDLC can be a source for Errors. The later in the life cycle an error is detected, the costlier it will be to fix it
Actually - all phases of SDLC can be a source for Errors. The later in the life cycle an error is detected, the costlier it will be to fix it