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    STUDIA INFORMATICA - Ediţia nr.2 din 2012  
         
  Articol:   DRAS: DERIVED REQUIREMENTS GENERATION.

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A system specification may include many interdependencies between the specified requirements. Requirements may conflict with one another and they may impact other requirements as well. We present the DRAS (Derived Requirements generation by Actions and States) methodology that helps to identify Functional Requirements (FRs) that are in conflict with other FRs DRAS also assists with generating the derived requirements that are inferred from the conflicting requirements. DRAS is based on the observation that using the same action in two requirements indicates that those requirements may conflict. In order to find which requirements potentially are in conflict with a given requirement, DRAS considers actions stated by the requirements, their implied actions, modes (also called states), and action modifiers.The DRAS methodology is explained by means of a comprehensive example, which uses a subset of simplified requirements from an industrial project that one of the authors participated in its requirements definition and analysis.

Key words and phrases. Early Aspects, Requirements Engineering, Conflicting Requirements, Crosscutting Requirements, Derived Requirements, Match-Point.

 
         
     
         
         
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