[manigandham]

What category? The examples you used are formally relational databases. We can certainly talk about common use-cases for certain specific database vendors and products but that's not the same as the underlying type.

For example, here's Pinterest handling time-series data on Hbase: https://medium.com/pinterest-engineering/pinalyticsdb-a-time...

There's a big difference and muddying the definitions with marketing jargon ends up causing too much confusion in this industry.