When you start the CLI you are in the default database. This is rooted at
hive.warehouse.dir which is typically rooted at /user/hive/warehouse

If you create a database the default location is /user/hive/warehouse/
+ databasename +".db"

Although when you create the database you can set the location.

The 'describe database' command is used to interrogate this information

hive> describe database default;
OK
default hdfs://hdfs.hadoop.pvt:54310/user/hive/warehouse                
Time taken: 2.373 seconds
hive>

hive> describe database edward;
OK
edward          hdfs://hdfs.hadoop.pvt:54310/user/hive/warehouse/edward.db      
Time taken: 0.08 seconds



On Tue, Mar 6, 2012 at 1:28 PM, mahsa mofidpoor <mofidp...@gmail.com> wrote:
> Hello,
>
> How different databases are distinguished within Hive? Do they correspond to
> different HDFS directories?
>
> Thank you inn advance for your reply,
> Mahsa

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