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# Data model
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2022-11-15 09:56:27 +01:00
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The OpenAIRE Research Graph comprises several types of [entities](../category/entities) and [relationships](./relationships) among them.
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The latest version of the JSON schema can be found on [Bulk downloads](../download).
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2022-09-21 17:43:49 +02:00
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<p align="center">
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<img loading="lazy" alt="Data model" src="/img/docs/data-model.png" width="80%" className="img_node_modules-@docusaurus-theme-classic-lib-theme-MDXComponents-Img-styles-module"/>
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</p>
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The figure above, presents the graph's data model.
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Its main entities are described in brief below:
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* [Results](entities/result) represent the outcomes of research activities.
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* [Data Sources](entities/data-source) are the resources used to collect metadata for the graph objects
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* [Organizations](entities/organization) correspond to companies or research institutions involved in projects,
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responsible for operating data sources or consisting the affiliations of Product creators.
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* [Projects](entities/project) are research projects funded by a Funding Stream of a Funder.
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* [Communities](entities/community) are groups of people with a common research intent.
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2022-09-09 17:38:08 +02:00
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:::note Further reading
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A detailed report on the OpenAIRE Research Graph Data Model can be found on [Zenodo](https://zenodo.org/record/2643199).
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:::
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