Question: List and describe SDLC models. Write 2 advantages and disadvantges for each model. Also answer he question when to use each model? What is top

List and describe SDLC models. Write 2 advantages and disadvantges for each model. Also answer he question "when to use each model"?
What is top-down and bottom-up estimating? when are they used? What are the advantage and disadvantageofestimating?

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