SYSIBM.SYSTABLES catalog table has a type column where you can check whether the object is of type table or view.
SELECT name, type from sysibm.systables where name='object name'
Gives whether the "name" object is of type table or view or alias.
Type of objects are
A - Alias
T - Table
V - View
For more info you can refer to
http://publib.boulder.ibm.com/infoce...ablestable.htm
Thanks,
Madhavi.