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Data management is growing in complexity as largescale applications take advantage of the loosely coupled resources brought together by grid middleware and by abundant storage capacity. Metadata describing the data products used in and generated by these applications is essential to disambiguate the data and enable reuse. Data provenance, one kind of metadata, pertains to the derivation history of a data product starting from its original sources. In this paper we create a taxonomy of datadoi:10.1145/1084805.1084812 fatcat:ldlsaejpmnclxi3rzz2mf2rk2q