Command DbGetAliasAttribute :

Get the attribute name from the given alias.
If the given alias is not found in database, returns an empty string

DbGetAliasAttribute Definition
Input Argument	Tango::DEV_STRING	The attribute alias
Output Argument	Tango::DEV_STRING	The attribute name (dev_name/att_name)
DisplayLevel	OPERATOR	..
Inherited	false	..
Abstract	false	..
Polling Period	Not polled	..
Command allowed for	All states	..