I understand that OJAI documents are stored in a compact binary format, not as plain ASCII text. But, that does not give us the complete picture, and I am more interested in how I can visualize this. Given below is the logical vs physical model of binary MapR-DB tables. I am looking for the physical schema for JSON tables; my understanding is JSON tables follow exactly the same structure, just that in some cases the value can be a map (or nested maps) instead of an atomic value. Is that correct? Wouldn't it become grossly inefficient for too many nested maps if we don't strategically make new column families?