An apparatus includes a processor to: receive multiple normalized metadata portions based on metadata portions originating from vendor devices storing data sets of a distributed online library system; compare the multiple pieces of information between pairs of normalized metadata portions to identify at least one pair of identical portions of data; analyze the pieces of information of normalized metadata portions corresponding to an identified pair of identical portions of data to determine if there is a dependency relationship between each portion of data of the pair and another identical portion of data stored within another device; and in response to there being such a pair of dependency relationships, generate a visualization that includes a combination of graphical elements depicting the pair of dependency relationships, and transmit the visualization to the client device to enable a visual presentation of the visualization.
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