Columnar databases are used in data warehouses where businesses send massive amounts of data from multiple sources for BI analysis. Column oriented databases have faster query performance because the column design keeps data closer together, which reduces seek time.

Is Cassandra a columnar database?

Cassandra, on the other hand, is a columnar NoSQL database, storing data in columns instead of rows. A column in a Cassandra database contains three fields: the name of the column or key, the value against the key, and a time stamp.

What is columnar database example?

Here is an example of a simple database table with four columns and three rows. In a columnar DBMS, the data would be stored like this: 0411,0412,0413;Moriarty,Richards,Diamond;Angela,Jason,Samantha;52.35,325.82,25.50.