We've been relying on streams since the advent of write ahead logs but the complexity of streaming state transformations was re-formed into something that is ea

We've been relying on streams since the advent of write ahead logs but the complexity of streaming state transformations was re-formed into something that is easier to reason about. The most common form is a relational DB which is generally users asking questions against snapshots of the WAL. RDB's is a highly opinionated layer of abstraction on top of data streams (in the form of inserts and updates).