How to write a service?

Question

MySQL

Good afternoon. It is necessary to write a REST service in the near future, which is a set of certain forms that the user fills in and can give (or remove) access to their completed forms to another user. The front will be on Angular2. And it seems that the answer immediately suggests itself "what you know how to write on," but .... The forms must be multilingual ... And then the plug - in which database to store the values ​​\u200b\u200bof the forms. What to use Mongo or Mysql?
Updated Clicked "publish" a little earlier. In Mongo, you can store form values ​​(option) in one document immediately with translation
option1 : { 'name': 'имя', 'name':'name ....},
in the case of mysql, it will have to be different, of course. And how I would like to use mongo, together with node.js, but I want to hear opinions. And at the same time the question - is there anywhere to see the implementation of a user's access to the personal account of another user

Answer 1

definitely not in php, nodejs is not databases.