Access control in database management systems

The recent General Data Protection Regulation has has been a major worry for a lot companies, especially small businesses. This created a need for a tool that could help ease businesses or other data collecting entities into GDPR requirements. During this work in developing such tool I thoroughly analysed the GDPR. During this analysis I selected the most important requirements, that are universal in many databases and can be implemented on the database level. For this implementation I chose to use PostgreSQL database management system, for its popularity and long development support. Although I this extension is written for PostgreSQL it can easily be ported to other database management systems as well. In all, this extension is great for small database, but may fall short on larger ones. For large databases it would have to be extended quite heavily and optimised as well, so it would require as little resources for its operations as possible