Percorrer por autor "OLIVEIRA, RAFAEL DOS SANTOS"
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- Business Process Modeling Framework for Integrated Information SystemsPublication . OLIVEIRA, RAFAEL DOS SANTOS; Maio, Paulo Alexandre Fangueiro OliveiraWith organizations increasingly relying on interconnected systems, the ability to integrate heterogeneous technologies seamlessly has become a critical determinant of efficiency, resilience, and strategic coherence. This dissertation presents a process-centric integration framework designed to mitigate fragmentation by combining Business Process Model Notation (BPMN), enterprise integration patterns, and open-source technologies. Grounded in the principles of modularity, abstraction, and scalability, the framework provides an unified architectural foundation that aligns organizational processes with technical infrastructures while preserving interoperability and adaptability over time. This research was conducted upon a systematic review of the literature, followed by the design, implementation, and evaluation of a fully functional prototype. Within this framework, BPMN was adopted to formalise and structure processes; Kong and Keycloak ensured that governance and identity management were handled centrally; Ballerina enabled contract-first development and facilitated polyglot integration; and Nuclio provided the serverless runtime necessary for elastic execution. Together, these technologies prove that orchestration can be centralized in a single coherent layer; security policies enforced uniformly at the system perimeter; and integrations designed as modular, reusable components. As a result, process models that might otherwise remain abstract representations were effectively transformed into executable workflows, capable of bringing together human decision-making tasks and automated services with a high degree of semantic accuracy. Evaluation confirmed that the framework realises engine neutrality, runtime portability, and consistent enforcement of authentication and authorisation, while fostering sustainable integration practices. A practical scenario involving the synchronisation of finance and stock services validated these capabilities, showing that theoretical principles could be enacted in real operations. Taken together, the findings highlights the dissertation´s contribution on two levels: from a research prespective, by combining enterprise architecture principles with operational practice; and from an implementation standpoint, by providing a functional artifact that organizations can adapt and extend to address the evolving challenges of digital transformation.