input: [Name] data_type [Description] Return data type of the function, if it is a built-in type, or ARRAY if it is some array (in that case, see the view element_types), else USER-DEFINED (in that case, the type is identified in type_udt_name and associated columns). [Data Type] 
output: character_data
options: s q l _ i d e n t i f i e r
options: c h a r a c t e r _ d a t a
options: c a r d i n a l _ n u m b e r
options: y e s _ o r _ n o
options: t i m e _ s t a m p