Design as a series of decisions a designer is faced with a series of design issues These are sub-problems of the overall design problem Each issue normally has several alternative solutions design options The designer makes a design decision to resolve each Issue -This process involves choosing the best option from among the alternatives www.oseng.com O Lethbridge/Laganiere 2001 Chapter 9: Architecting and designing software© Lethbridge/Laganière 2001 Chapter 9: Architecting and designing software 3 Design as a series of decisions A designer is faced with a series of design issues • These are sub-problems of the overall design problem. • Each issue normally has several alternative solutions: —design options. • The designer makes a design decision to resolve each issue. —This process involves choosing the best option from among the alternatives