Is there any way to delete a given Node?
The tour only show how to delete the edges connected to a given node, but not about the node itself.
Yes, you can delete a node. Deleting a node in Dgraph means that the outgoing edges/literal values attached to the node would be deleted. Any incoming edges would not be deleted.
The docs mention how to do it using RDF’s(https://docs.dgraph.io/mutations/#delete) and JSON(https://docs.dgraph.io/mutations/#deleting-edges).