Couchbase Server stores the data in a data bucket. It is essential to have a data bucket because of the couchbase server only chooses a data bucket for storing its data. When the couchbase server is installed then data bucket gets created by default. The data bucket can store up to 250MB data but if more data has to be added then new bucket can be created on if there is enough space in RAM.

BY Best Interview Question ON 24 Mar 2019