Any data used to organize of categorize other data, or for relating data to information both within and beyond the boundaries of the enterprise.

Reference Doc: EIRA

In the frame of the regulatory reporting process, regulatory parties refer to public institutions setting regulatory reporting obligations to third parties. 

Regulatory reporting is the periodical provision of structured or unstructured data (qualitative or quantitative) from concerned private and public organisations, to competent authorities (at EU or national level) as required by the requirements set in specific legislation.

Stakeholders that are obliged or invited to provide information to EU institutions.

Reference Doc: How to facilitate the reuse of data in regulatory at the European Commission

The reusability of IT solutions (e.g. software components, Application Programming Interfaces, standards), information and data, is an enabler of interoperability and improves quality because it extends operational use, as well as saving money and time. This makes it a major contributor to the development of a digital single market in the EU.

Data reuse occurs when an investigator conducts their own analysis of research data collected by others. 

Reference Doc: Reusing Data - Research Data and Reproducibility