Does Google BigQuery/ Amazon Redshift use column-based relational database or NoSQL database?

Question

I\'m still not very clear about the difference between a column-based relational database vs. column-based NoSQL database.

Google BigQuery enables SQL-like query so

Answer 1

First, remember that NOSQL is commonly considered as abbreviation to "Not Only SQL", so there is no contradiction for the system of having both SQL interface, and some NOSQL features. Having said that, both Redshift and BigQuery have their foundation in column based databases. Redshift is based on Paraccel which is classic column based RDBMS targeted towards data warehousing, and BigQuery is based on internal Google's column based data processing technology called "dremel".