What Is Namespace in Cassandra

A keyspace in Cassandra is a namespace that defines data replication on nodes. A cluster contains one keyspace per node. Given below is the syntax for creating a keyspace using the statement CREATE KEYSPACE.

How do I create a namespace in Cassandra?

To query Cassandra, create and use a keyspace. Choose an arbitrary data center name and register the name in the properties file of the snitch. Alternatively, in a cluster in a single data center, use the default data center name, for example, datacenter1, and skip registering the name in the properties file.

What is default keyspace in Cassandra?

A default keyspace can be defined for each session created off the main connection object. Without this option, each table will need its corresponding keyspace specified with each query. This option is useful for clusters which have only one (non-system) keyspace.