I finished college at the end of the year. I did Analysis and Development Systems, and there I had programming class for mobile devices, specifically for Android. In the class the teacher taught to develop the persistence of data on a API in PHP with database MySQL, basically the API received requests via POST and returned a JSON. My CBT was all done in this scheme.
Now I've started developing a professional application. I'm using the same data persistence strategy. But as I'm going to work with the signature system, I started to realize that this method would not be so secure, even using the recommendations (https, MySQL prepare statmant and variable validation rules in PHP) and it's also somewhat complicated and cumbersome .
I then started a search to find other methods. I found the firebase realtime database. I fell in love! Simple and robust, not to mention that is integrated into the ecosystem gives Google. I'm getting used to and learning a bit more about the NoSQL concept.
So, is it a good choice to change the API system to firebase? Or refine the API and continue the project with it? Just to complement, I like to follow Google's standards.
I wanted the opinion of someone experienced in the subject.