n South African Computer Journal - An XML based approach to enforcing history-based separation of duty policies in heterogeneous workflow environments




In the computing world a new technology occasionally comes along, promising to make dramatic changes to the way computing tasks are performed. the Extensible Markup Language (XML) has been heralded as one such technology. XML promises to provide a universal metadata mechanism for defining, understanding and interchanging information between possibly heterogeneous systems. This paper exploits this powerful promise of XML by examining how it can be used to enforce history-based separation of duty policies across heterogeneous workflow environments. A very brief overview of separation of duty policies is provided, whereafter the need for history-based separation of duty is motivated through an extensive case study. A solution based on XML baggage is proposed and it is shown how the solution would operate in the context of the case study.


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