Identifies
the catalog in which the alias is defined. If the catalog's volume
is physically mounted, it is dynamically allocated. The volume must
be mounted as permanently resident or reserved. See Catalog Selection Order for DEFINE for the order in which a catalog is selected
when the catalog's name is not given.
catname/alias
Names the catalog or an alias that can be resolved
to a catalog. When the alias is for a user catalog connector, catname is
the name of the master catalog or user catalog in which the connector
record has been defined.