Requirements Identification and Representation in Software Product Line

Software Product Line (SPL) core assets development is an effective approach in software reuse in which core assets can be shared among the members of the product line with an explicit treatment of variability. Considering reuse early in development phase can promise the increase in reuse and understanding reuse at a later development phase. This paper concentrates on identifying and representing variability at requirement level. The proposed approach differs slightly from other approaches where identification of the variant requirements is done with commonality and variability analysis and using two important requirements model, feature and use case model. Relation between both requirements model is through matrix table. This paper illustrates the application of this approach using the library systems product line example.