> There was a time where adding a column to a database was a really big deal. You had to get it past the DBA, and there were real resource constraints on the da

> There was a time where adding a column to a database was a really big deal. You had to get it past the DBA, and there were real resource constraints on the database system. With a document store the schema is entirely in the hands of the developer. That time is still here if you're running enough read nodes and QPS.