Question: Is DynamoDB columnar database?

Answer

No, DynamoDB is not a columnar database. It is a NoSQL database that uses a document-based data model and is optimized for high performance and scalability. In a columnar database, data is organized into columns, and queries are typically optimized to access only the columns needed for a specific query. DynamoDB does not support this type of organization, and instead stores data as key-value pairs in items within tables. It provides flexible data modeling and allows users to store and retrieve data in a way that is natural to the application.

If you're looking for a columnar database, consider using Redshift.