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Elements Used for Requirements Capture

built from / (built in)

refined by / (refines)

documents /  (documented by)

Component (System)

Document

documents / (documented by)

refined by / (refines)

augmented by / (augments)

Requirement

ExternalFile

NOTE: ExternalFile CLASS is used to  capture pictures, graphs, tables,  etc. that are part of a requirement  statement.

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The Requirements Capture Approach • Get the leaf nodes – the requirements in single, verifiable statements.

documented by

Source  Document

System

• Record source requirement statement in the Description attribute of a Requirement . • Obtain traceability between source and first level Requirements with documents/documented by relationship pair. • Obtain traceability between parent/child Requirements with the refines/refined by relationship pair.

documents

Originating  Requirements

X

Parent  Requirements

refined by

refined by

Child  Requirements

refined by

Leaf node Requirements traceable to Originating  Requirements using “ refined by ” relation

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