Could you let me know about Prisma and how it works with graphQL based on React.js project

Prisma simplifies access to your database by providing a nice client that you can use to query your database. Consider it like a ORM that fetches data for you You can easily build a graphql server using prisma. Then you can consume this server in a react application use a graphl client(most people use apollo for this). Here is my personal app that I am building using this stack: https://github.com/javascript-af/javascript-af

@Harshit So I have to write code for the graphql server using Prisma?

Prisma is not a language. In your GraphQL server, you use Prisma Client or Prisma Binding, which talk with Prisma Server.