Question

Which among the following is the right syntax for 'Using a Keyspace'?

a) SELECT FROM keyspace_name;
b) USE keyspace_name;
c) ATTACH keyspace_name;
d) DATABASE keyspace_name;

Answer 1

The correct syntax to use a keyspace in database systems like Apache Cassandra is 'b) USE keyspace_name;'. This command is essential before performing operations within a specific keyspace.

Step-by-step explanation:

The correct syntax for using a keyspace in Apache Cassandra (and similar database systems) is:

b) USE keyspace_name;

This command sets the keyspace you want to work with as the current one for subsequent operations. It's important to select the correct keyspace before trying to access tables within it since tables are defined within the context of a keyspace. It's similar to selecting a database in relational database management systems. If you execute a SELECT command without specifying a keyspace, Cassandra uses the currently selected keyspace.