Managing Scientific Data:
Scientists are confronted with significant datamanagementproblems due to the large volume andhigh complexity of scientific data. In particular,the latter makes data integration a di#cult technicalchallenge. In this paper, we describe our work onsemantic mediation and scientific workflows, and discusshow these technologies address integration challengesin scientific data management. We first give anoverview of the main data-integration problems thatarise from heterogeneity in the...