Software requirements

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Presentation transcript:

Software requirements feasibility study, trouble/benefit of natural languages View-point oriented analysis: all angles/perspectives should be exhausted use-case diagrams: UML unified modeling language (CASE) Finite state machine and class/state diagram to describe system logic: e.g. number property and pattern matching: minor differences Efficient alg design: power function Relational modeling: Entity-Relation diagram E/R diagram (UML): DB development; Relational modeling: Entity-Relation diagram E/R diagram (UML): DB dev, E/R->tables, attr ER diagram 1-m, m-n, 1-1, entity, relation, attributes, arrow (angular, rounded): analyze by perspective (more after quiz)