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 # Open Researcher and Contributor ID (ORCID)
+ORCID (Open Researcher and Contributor ID) is a non-profit organization that provides a unique identifier for researchers. ORCID iDs are used to connect researchers with their contributions, such as publications, grants, and affiliations.
 
+This document describes how to collect ORCID data from the ORCID datasource. 
 ## Data acquisition
 
+### Full ORCID Dump
+
+The ORCID dump can be downloaded from the ORCID website https://support.orcid.org/hc/en-us/articles/360006897394-How-do-I-get-the-public-data-file.
+The ORCID dump consists in different compressed files that needs to be extracted. 
+This compressed file contains information on researchers in XML format. Once extracted, they will be parsed to populate the three tables described below.
+
+### Incremental Updates
+ORCID provides an API to get incremental updates,the parsed incremental data can be used to update the three tables with the latest changes.
+
+### OpenAIRE ORCID Data model
+
+- **Authors**: This table contains information about ORCID authors, including their ORCID ID, name, fullname, other names, employments, works, and ROAR IDs.
+- **Employments**: This table contains information about the employments of ORCID authors, including their ORCID ID, organization, start date, end date, and ROAR ID.
+- **Works**: This table contains information about the works of ORCID authors, including te paper PID and ORCID ID.
+
+
+
 ## Process
 
 In the following we describe the process applied to the ORCID contents.