it is impossible to do anything remotely similar to a SQL join. Therefore, developers must embrace the ethos of NoSQL by distributing relational data ahead of t

it is impossible to do anything remotely similar to a SQL join. Therefore, developers must embrace the ethos of NoSQL by distributing relational data ahead of time. Can someone help me translate this? Are they saying that since there's no joins they store their aggregates denormalised upfront? Or what?