Hadoop is a distributed file system that allows you to store large quantities of data and handle data redundancy over a cloud of computers.
The major advantage is to process it in a distributed way because data is saved in multiple knots. Instead of wasting time transferring data over the network, each node may process data stored on it.
On the other hand, we can query data in real time on a relation database computing system, but it is not efficient to store data on large tables, records, or columns.
Hadoop also offers a strategy for creating a column database for runtime row queries using Hadoop HBase.