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...Ocr computer science a level software development intermediate notes www pmt education specification programming methodologies waterfall lifecycle agile extreme spiral model rapid application b merits drawbacks and uses of c writing following algorithms life cycles sdlcs have some stages in common including analysis stakeholders state what their requirements which are used to define the problem system may be decided by analysing strengths weaknesses current solution considering inputs outputs stored data amount involved design different aspects new designed such as volume methods frequency security features required access levels hardware set up compatibility user interface menus accessibility navigation test plan also at this stage from previous is split project into individual self contained modules allocated teams for testing program tested against formed there various types that can carried out alpha house within company bugs pinpointed fixed beta end users after has been completed...