openaire-graph-docs/docs/data-model/data-model.md

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# Data model
The OpenAIRE Research Graph comprises several types of entities and [relationships](./relationships) among them.
The latest version of the JSON schema can be found on [Bulk downloads](../download).
![Data mode](./assets/data-model.png)
The figure above, presents the graph's data model.
Its main entities are described in brief below:
* [Research Products](entities/result) represent the outcomes of research activities.
* [Organizations](entities/organization) correspond to companies or research institutions involved in projects,
responsible for operating data sources or consisting the affiliations of Product creators.
* [Funders](entities/funder) (e.g. EC, Wellcome Trust) are agencies responsible for a list of Funding Streams.
* [Funding Streams](entities/funding-stream) represent investments (funding actions) from Funders (e.g. FP7 or H2020).
* [Projects](entities/project) are research projects funded by a Funding Stream of a Funder.
* [Data Sources](entities/data-source) are the resources used to collect metadata for the graph objects
<span className="todo">TODO: communities are present in the existing documentation instead of funders and fundins streams</span>
:::note Further reading
A detailed report on the OpenAIRE Research Graph Data Model can be found on [Zenodo](https://zenodo.org/record/2643199).
:::