# Data model

The OpenAIRE Research Graph comprises several types of entities and 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 represent the outcomes of research activities.
* Organizations correspond to companies or research institutions involved in projects,
responsible for operating data sources or consisting the affiliations of Product creators.
* Funders (e.g. EC, Wellcome Trust) are agencies responsible for a list of Funding Streams.
* Funding Streams represent investments (funding actions) from Funders (e.g. FP7 or H2020).
* Projects are research projects funded by a Funding Stream of a Funder.
* Data Sources are the resources used to collect metadata for the graph objects