Provenance: The bridge between experiments and data

Prototype-based Provenance-Aware Service Oriented Architecture (PASOA) allows scientists to determine the processes and the abstract workflow involved in the processing of a given data item. The generation of a workflow is followed by the descriptions in the workflow-generation process, providing the provenance for the executable workflow. Pegasus workflow compiler system, which maps high-level abstract workflow descriptions onto available distributed resources, consists of five primary steps such as reduction, site selection, data staging, registration, and clustering. The PAOSA project must include support querying that is provided by independent source of process documentation using the same data model. Each refiner documents the relationships between nodes in the workflow by recording identicalTo, siteSelectionOf, stagingInroducedFor, and clusteringOf.