GraphQL
GraphQL is an open-source data query and manipulation language for APIs, providing a powerful alternative to REST by allowing clients to specify exactly what data they need, reducing over-fetching and under-fetching of data. Developed by Facebook in 2012 and open-sourced in 2015, it enables declarative data fetching where the client can ask for what it needs and get exactly that.
This chapter describes the GraphQL protocol for evitaDB and doesn't make sense for other languages. If you're interested in the details of the GraphQL implementation, please change your preferred language in the upper right corner.