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Hive – Create Database

In Hive, the database is considered as a catalog or namespace of tables. So, we can maintain multiple tables within a database where a unique name is assigned to each table. Hive also provides a default database with a name default.

• Initially, we check the default database provided by Hive. So, to check the list of existing databases, follow the below command: –

Here, we can see the existence of a default database provided by Hive.

• Let’s create a new database by using the following command: –

So, a new database is created.

• Let’s check the existence of a newly created database.

• Each database must contain a unique name. If we create two databases with the same name, the following error generates: –

• If we want to suppress the warning generated by Hive on creating the database with the same name, follow the below command: –

• Hive also allows assigning properties with the database in the form of key-value pair.

• Let’s retrieve the information associated with the database.