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Decisions about what to include in a Fedora digital object and how to configure its Datastreams are choices as you develop content for your repository. The examples in this tutorial demonstrate some common models that you may find useful as you develop your application. Different patterns of Datastream designed around particular "genre" of digital object (e.g., article, book, dataset, museum image, learning object) are known as "content models" in Fedora.

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Figure 2: Fedora Digital Object Datastreams

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For the access perspective, it would be best if the internal structure of digital object is ignored and treated as being encapsulated by its access points. Each access point is identified by a URI that conforms to the Fedora "info" URI scheme. These URIs can be easily converted to the URL syntax for the Fedora REST-based access service (API-A-LITE). It should be noted that Fedora provides a several protocol-based APIs to access digital objects. These protocols can be used both to access the representation and to obtain associated metadata at the same access point.

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Figure 3: Fedora Digital Object Access Perspective

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