Question

In a columnar database, the columns are stored together on disk, achieving a higher compression ratio is an expensive operation, a. true b. false

Answer 1

columnar databases consist of analytical workloads, because that particular data format can lead to aggregation and scans.

In addition to that, they store data of a single column together and also loop all the column values to get the best data driven goals.

row oriented databases are used to store single rows to add more functionality to the system.