Software Requirements in Software Engineering SE5

Software Requirements ,[object Object]

Objectives ,[object Object],[object Object],[object Object],[object Object]

Topics covered ,[object Object],[object Object],[object Object],[object Object]

Requirements engineering ,[object Object],[object Object]

What is a requirement? ,[object Object],[object Object],[object Object],[object Object],[object Object]

Requirements abstraction (Davis)

Types of requirement ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Definitions and specifications

Functional and non-functional requirements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Functional requirements ,[object Object],[object Object],[object Object]

Examples of functional requirements ,[object Object],[object Object],[object Object]

Requirements imprecision ,[object Object],[object Object],[object Object],[object Object],[object Object]

Requirements completeness and consistency ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Non-functional requirements ,[object Object],[object Object],[object Object]

Non-functional classifications ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Non-functional requirement types

Non-functional requirements examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Goals and requirements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Examples ,[object Object],[object Object],[object Object],[object Object]

Requirements interaction ,[object Object],[object Object],[object Object],[object Object],[object Object]

Domain requirements ,[object Object],[object Object],[object Object]

Library system domain requirements ,[object Object],[object Object]

Train protection system ,[object Object],[object Object],[object Object]

Domain requirements problems ,[object Object],[object Object],[object Object],[object Object],[object Object]

User requirements ,[object Object],[object Object]

Problems with natural language ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Database requirement 4.A.5 The database shall support the generation and control of configuration objects; that is, objects which are themselves groupings of other objects in the database. The configuration control facilities shall allow access to the objects in a version group by the use of an incomplete name.

Editor grid requirement 2.6 Grid facilities To assist in the positioning of entities on a diagram, the user may turn on a grid in either centimetres or inches, via an option on the control panel. Initially, the grid is off. The grid may be turned on and off at any time during an editing session and can be toggled between inches and centimetres at any time. A grid option will be provided on the reduce-to-fit view but the number of grid lines shown will be reduced to avoid filling the smaller diagram with grid lines.

Requirement problems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Guidelines for writing requirements ,[object Object],[object Object],[object Object],[object Object]

System requirements ,[object Object],[object Object],[object Object],[object Object]

Requirements and design ,[object Object],[object Object],[object Object],[object Object],[object Object]

Problems with NL specification ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Alternatives to NL specification

Structured language specifications ,[object Object],[object Object],[object Object]

Form-based specifications ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

PDL-based requirements definition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

PDL disadvantages ,[object Object],[object Object],[object Object]

Interface specification ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The requirements document ,[object Object],[object Object],[object Object]

Users of a requirements document

Requirements document requirements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

IEEE requirements standard ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Requirements document structure ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Key points ,[object Object],[object Object],[object Object],[object Object]

Software Requirements in Software Engineering SE5

Software Requirements in Software Engineering SE5

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Software Requirements in Software Engineering SE5