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This can be confusing, since specialized “objects” and their specialized “Datastreams” perform a number of different functions, and serve a number of different purposes. Datastreams may store a reference to the binary file being stored (such as PDF, or an image), they may declare the Content Model Object affiliations of an object, and they may store the relationships that an object has to other objects in the repository. Each object in Islandora has a default DC Datastream. This Datastream is a Dublin Core record associated with this object. Islandora uses other metadata schemas, and crosswalks relevant data to the DC stream. For more information about how Islandora utilizes crosswalks, please review Chapter 13 12 - Metadata in Islandora.

For an overview of the Datastreams you will encounter in Islandora, see APPENDIX C - Datastream Reference.

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