With Space Cloud, you can make multiple queries even to different databases in a single request. If multiple queries are part of the same request, they get executed in parallel, and the individual responses are collated and returned.
Note: This is only a GraphQL feature and not available in any client SDKs.
Example: Fetch list of trainers (from PostgreSQL) and pokemons (from MongoDB):
query {
trainers @postgres {
id
name
}
pokemons @mongo {
name
type
}
}