EAit 1.3 Maintenance Aspects SHANGHAI JAD TONG UNIVERSITY e Life-cycle model The steps(phases) to follow when building software a theoretical description of what should be done e Life cycle The actual steps performed on a specific product Software EngineeringSoftware Engineering 1.3 Maintenance Aspects Life-cycle model • The steps (phases) to follow when building software • A theoretical description of what should be done Life cycle • The actual steps performed on a specific product