 Authors  Purpose  Main Phases  Related Literature  PDD  Examples  Conclusions

 Luiz Marcio Cysneiros › Requirements engineering › Goal models  Julio Cesar Sampaio do Prado Leite › Domain analysis › Scenario evolution  Jaime de Melo Sabat Neto

 The integration of non-functional requirements (NFRs) into conceptual models.  Better implementation of NFRs in the design process of an information system.  Early on in the process

1. Construct a Language Extended Lexicon (LEL). 2. Build functional model 3. Build NFR model a) Construct relations in LEL  knowledge base b) Use knowledge base to search for NFRs c) Represent NFRs using a NFR Graph 4. Integrate functional model and NFR model

 The first international symposium on requirements engineering, Los Alamitos, USA. › Goguem and Linde (1993)  Elicitation techniques › Leite and Franco (1993)  LEL › LEL validated by Cysneiros and Leite (1999)  Most important lesson learned: NFRs are equally important as functional requirements

 Chung and Nixon (1995)  Dealing with NFRs  Chung, Nixon, Yu and Mylopoulos (2000)  NFR Graph  Many references towards papers of the writers.  Not much variety in the number of writers.

 A framework for integrating non- functional requirements into conceptual models by the means of: › LEL › NFR Model › Functional Model › Integrated Model

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