Question: what are the tools used for data warehousing?
Answer: Amazon Redshift. Redshift is a cloud-based data warehousing tool for enterprises. ... 
Microsoft Azure. Azure SQL data warehouse is a cloud-based relational database from Microsoft. ... 
Google BigQuery. ... 
Snowflake. ... 
Micro Focus Vertica. ... 
Teradata. ... 
Amazon DynamoDB. ... 
PostgreSQL.