Software Requirements - Ian Sommerville

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Domain requirements●●●Derived from the application domain anddescribe system characteristics and features thatreflect the domain.Domain requirements be new functionalrequirements, constraints on existingrequirements or define specific computations.If domain requirements are not satisfied, thesystem may be unworkable.©Ian Sommerville 2004 Software Engineering, 7th edition. Chapter 6 Slide 24
Library system domain requirements●There shall be a standard user interface to alldatabases which shall be based on the Z39.50standard.● Because of copyright restrictions, somedocuments must be deleted immediately onarrival. Depending on the user’s requirements,these documents will either be printed locally onthe system server for manually forwarding to theuser or routed to a network printer.©Ian Sommerville 2004 Software Engineering, 7th edition. Chapter 6 Slide 25
Page 1 and 2: Software Requirements©Ian Sommervi
Page 3 and 4: Topics covered●●●●●Functi
Page 5 and 6: What is a requirement?●●It may
Page 7 and 8: Types of requirement●●User requ
Page 9 and 10: Requirements readers©Ian Sommervil
Page 11 and 12: Functional requirements●●●Des
Page 13 and 14: Examples of functional requirements
Page 15 and 16: Requirements completeness and consi
Page 17 and 18: Non-functional classifications●
Page 19 and 20: Non-functional requirements example
Page 21 and 22: Examples●●A system goal• The
Page 23: Requirements interaction●●Confl
Page 27 and 28: Domain requirements problems●●U
Page 29 and 30: Problems with natural language●
Page 31 and 32: Editor grid requirement2.6 Grid fac
Page 33 and 34: Structured presentation2.6.1 Grid f
Page 35 and 36: System requirements●●●●More
Page 37 and 38: Problems with NL specification●
Page 39 and 40: Structured language specifications
Page 41 and 42: Form-based node specificationInsuli
Page 43 and 44: Tabular specificationConditionActio
Page 45 and 46: Sequence diagrams●●●These sho
Page 47 and 48: Interface specification●●●Mos
Page 49 and 50: The requirements document●●●T
Page 51 and 52: IEEE requirements standard●Define
Page 53 and 54: Key points●●●●Requirements

Software Requirements - Ian Sommerville

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