How to create abstract assets (no instantiation)

PBCore 2.0 can be used to express “abstract,” or metadata-only assets.

These assets simply do not have any instantiations, and might serve to represent a high level idea such as a television for which there is no single physical or digital instantiation.

The descriptive metadata within such an assets may be referenced from within other assets. For example, programs within a series can reference the series record and vice versa. This can save the effort of creating redundant metadata.

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