Abstract-Software development tools are very important in software engineering. Although roles have been acknowledged and applied for many years in several areas related to software engineering, there is a lack of research on software development tools based on roles. Most significantly, there is no complete and consistent consideration of roles in all the phases of software development. Considering the increasing importance and applications of roles in software development, this paper intends to discuss the importance of roles in software engineering and that of role-based software development; review the literature relevant to role mechanisms in software engineering; propose and describe a role-based software process; and implement a prototype tool for developing complex software systems with the help of role mechanisms.

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Federated identity management systems, such as the Liberty Alliance framework, are intended to protect identity and control access to personal information. An audit trail service has been proposed as an addition to the framework to address potential privacy breaches. A simple scenario is used to analyze what should be logged to an audit trail and how it should be logged in order to address privacy concerns and comply with privacy legislation. The implementation of an audit trail service conforming to the Liberty Alliance data service template is described. Our research to date has achieved results which show promise in terms of having a scalable solution that conforms to Liberty Alliance specifications and protects the user's identity while providing a consolidated view of the data sharing activities associated with their personal information.

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