What kind of data you may request?
First and foremost, you have the right to access data stored about you. But, you also have the right to access the following information:
Data recipients
Who (individual, private entity or public authority) has received your personal data?
The data user (controller) may partly of fully refuse to provide you with access to the requested data if there is a compelling need to protect other important interests.
Resources
Law
2
Regulation (EU) 2016/679 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC (General Data Protection Regulation)
In force as of 27 April 2016
Applicable as of 25 May 2018
Articles 12-15
Applicable as of 25 May 2018
Articles 12-15
Other
1
Handbook on European data protection law
2018 edition
Joint publication by the EU Agency for Fundamental Rights and the Council of Europe
Joint publication by the EU Agency for Fundamental Rights and the Council of Europe
Human Rights Guide
A European platform for human rights education