flag|category_typ|not_applicable|not final 
flag|category_typ|not_applicable|not instantiable 
field|category_name|not_applicable|varchar2(50)
field|category_description|not_applicable|varchar2(1000)
field|category_id|not_applicable|number(2)
field|parent_category_id|not_applicable|number(2)
function|category_describe|not_applicable|varchar2
flag|category_describe|not_applicable|not instantiable