Ideas regarding building a web page with downloadable link , using our own DB

I wanted to build a web page in which I wanted a downloadable link(of a json file , size less than 5mb) to be there, and that json file should come from my database. Also I wanted to know a way to create that database schema(basically I wanted to display my database table as it is in a web page)

I am a beginner in development and not sure what tech stack should I use.