In this final stage of the project you will be adding a database to your API so that data is persisted.
You can use any database of your choosing - most likely PostgreSQL or MongoDB.
To setup your database prefer using PostgreSQL on Render.
Please read the guide at https://syllabus.codeyourfuture.io/guides/deployment-render/creating-a-postgres-db on how to install PostgreSQL on Render
Ask for help on Slack if you need help with this
When this stage has been completed all of your data should exist only in your database - no data should be stored in your API or in your React app