If it is just this(and we're not talking about really intensive DB access like in big apps)
You should write everything in dictionaries instead and then use the method
dictionary.to_json, after that, just save the content on a file with the File Class.
To import, you'd just need to load the file and load its contents as a string, then use the method dictionary.parse_json
I used this to create a custom language system, where the translations are loaded from a json file I created before...
Have a look over Dictionaries page at the docs