It used to be that way. Old data warehouses (built on relational dbs) couldn't handle large scale data, and old data lakes used to be hard to use (write a map-reduce job to query data).
i worked at excite.com right after the IPO, and front and center in the HQ building was a MASSIVE glass wall showcasing the oracle data warehouse machine room.
i didn't enjoy working w/either the datastore directly, or the DBA team that ran it either. an early, more old-white-dude "i just want to serve 5T"
i didn't enjoy working w/either the datastore directly, or the DBA team that ran it either. an early, more old-white-dude "i just want to serve 5T"