Making it FAIR

Metadata, the key to FAIR

When making data FAIR (Findable, Accessible, Interoperable, Reusable), metadata plays an important role. Metadata means descriptive information about the research data. To make research data easier to find and understand, it is essential to document the data. This considerably facilitates the further use of the data and makes reproducibility possible. Well-documented data is used and cited more frequently, which increases the reputation of the creator. Documentation is also helpful for you: Over time, details can fall into oblivion, so it is advisable to document the data directly while you work.

Good metadata enables you to understand, use, and share your data now and in the future, and helps other researchers discover, access, use and cite your data in the long-term. It also facilitates long-term preservation of the data. It ensures that the context for how your data was created, analysed and stored, is clear, detailed, and therefore, reproducible.

With metadata you describe, for example, who is the responsible researcher, when, where and why the data was collected, and how the research data should be cited. The content and format of metadata is often guided by a specific discipline and/or repository (in case you deposit the data to a repository). Remember to produce metadata along the research project, not at the end of it.

Within the context of open science and for optimal long-term archiving, data files should not be compressed or saved as proprietary formats, while open formats should be favoured. This ensures the access and reusability of the content. Notice that some file formats can’t be converted to open formats. Check if the repository where you want to deposit a dataset has a list of preferred file formats.

Read more about recommended file formats.

How to make your data FAIR

Particularly, when you are planning to share your data, it is recommended to follow the FAIR principles in research data management.

In short, the FAIR principles mean that data are:

Findable

The first step in (re)using data is to find them. Make sure that your data can be found by both humans and machines. Discovery of datasets depends on metadata and persistent identifiers (PIDs). Watch this video (4:51) to review what PIDs are. Make your data findable by ensuring that data are described with rich metadata. Choose a data repository (see e.g. re3data.org, Zenodo, Etsin) that assigns a persistent identifier for the datasets. The advantage of a persistent identifier over a normal web address is that the PID always points to the data, even if the data itself has changed location. Several types of PID exist, such as DOI, Handle and URN. Use ORCID for your personal persistent researcher identifier.

Accessible

Once someone has found your data, they need to know how they can get access to them. This can include e.g. authorisation and/or authentication processes. FAIR does not necessarily mean that data need to be open! In case the access to the data is restricted, make sure to provide sufficient contact information for other researchers if they are interested in the data. If the data can’t be made openly accessible, it is usually still possible to make the metadata publicly available.

Interoperable

Ensure that your data can be integrated with other data and that it can be utilised by applications or workflows for analysis, storage, and processing. Open, non-proprietary or common formats will increase accessibility. Think about software tools that are needed to access your data. If necessary, include documentation about the software (version, etc.). The concept of interoperability applies both at the data and metadata level.

Reusable

The FAIR principles are guiding principles, not standards. FAIR describes qualities or behaviours that are required to make data maximally reusable. Those qualities can be achieved by different standards. Also, you may not always be able to adhere to all. But applying some of the principles to your data will add the findability, accessibility, interoperability and reusability of your research data.

Check your knowledge about FAIR principles and learn more!

Remember:

FAIR = Findable, Accessible, Interoperable, Reusable
Rich metadata enables you to understand, use, and share your data now and in the future, and helps other researchers discover, access, use and cite your data.
Adhere to the FAIR principles to the extent you can with the data in question.

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