Sarcasm is not actually correct. An ECS is not an RDBMS, because in the latter is based on row-based storage, while the former is column-based. The storage par

Sarcasm is not actually correct. An ECS is not an RDBMS, because in the latter is based on row-based storage, while the former is column-based. The storage part of ECSs could actually be considered a form of columnar db. For example, locking is at column level, so you can have as many mutable accesses to a single entity (like a row) as there are columns (in reality, it's more complicated, due to access via iterators, but that's the principle).