Dgraph supports flexible schema. So, you can make a lot of changes to the schema without any "table migration" or downtime. For example, switching from int to datetime to string, adding fields, removing fields, adding relationships between types, all of this stuff needs no "DB work."
So, schema migrations are really easy with Dgraph, because it is a graph storage model, which allows for sparse properties to any data type (as opposed to the rigid table model enforced by SQL DBs).
So, schema migrations are really easy with Dgraph, because it is a graph storage model, which allows for sparse properties to any data type (as opposed to the rigid table model enforced by SQL DBs).