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Sldc is important because it breaks down the entire life cycle of software devvelopment thus make is easier to evaluate each part of software development and also makes it easier for programmers to work concurrently on each phase.also provide a rough time when software will be available for use.
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
Sldc is a operation that can be operate each other
Requirements well understood and well defined and have low technical risk.
what are the phases of the sdlc
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
Planning and Analysis. Many companies only spend 10-15 % on these two phases and in the end they fail because they didn't plan and analyze the product that was needed to invent. Spending more time on these two phases would decrease the failing overtime and reduce expenses by producing a needy product or service.
There are usually two design stages in SDLC. They are:High-level Design &Low-level Design
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.
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See the graph in the related link. It clearly separates out the differences between PDLC and SDLC.