I don’t think so, but I gonna ask someone about the whole picture.
They shouldn’t. If you see something you can fill up an issue in their respectively repo. All clients should follows Dgraph closely.
None, Dgraph’s GraphQL feature don’t touch anything else. It is independent. But if you gonna use GraphQL and wanna have an API your API should follow the graph structure that the GraphQL feature will create.
Not sure the question. Is it related to GraphQL for sure? can you share a link with context? If you are talking about point in time recovery (back-ups in general) it is EE feature. I think it is coming or it is already available, need to check.
hehehe, you should start from the Tour, Tutorials and GraphQL Docs there is some examples.