Hello evaggelia
In each process there is a link to the ecoquery article about the process. The link is typically at the end of the description, under the general information tab when you are looking at a process.
If you go to the ecoquery link for the process, you will be able to see who has updated and created the dataset, who was reviewed it, and when. You will need to login with a login you got when buying the database.
Good luck.