# 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).
The figure above, presents the graph's data model.
Its main entities are described in brief below:
* [Results](entities/result) represent the outcomes of research activities.
* [Data Sources](entities/data-source) are the resources used to collect metadata for the graph objects
* [Organizations](entities/organization) correspond to companies or research institutions involved in projects,
responsible for operating data sources or consisting the affiliations of Product creators.
* [Projects](entities/project) are research projects funded by a Funding Stream of a Funder.
* [Communities](entities/community) are groups of people with a common research intent.
:::note Further reading
A detailed report on the OpenAIRE Research Graph Data Model can be found on [Zenodo](https://zenodo.org/record/2643199).
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