===== Metadata schema =====

A metadata schema defines:

  * which fields exist
  * field types and constraints
  * controlled vocabularies

It is a **template**, not the content itself.

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===== Pre-defined object and metadata types =====

HORTUS includes:

  * predefined object types (e.g. dataset, publication)
  * predefined metadata formats

These help standardise descriptions across the platform.

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