CREATE TABLE ref_characteristic_types (characteristic_type_code TEXT, characteristic_type_description TEXT)
CREATE TABLE product_characteristics (product_id DECIMAL, characteristic_id DECIMAL, product_characteristic_value TEXT)
CREATE TABLE ref_colors (color_code TEXT, color_description TEXT)
CREATE TABLE products (product_id DECIMAL, color_code TEXT, product_category_code TEXT, product_name TEXT, typical_buying_price TEXT, typical_selling_price TEXT, product_description TEXT, other_product_details TEXT)
CREATE TABLE ref_product_categories (product_category_code TEXT, product_category_description TEXT, unit_of_measure TEXT)
CREATE TABLE characteristics (characteristic_id DECIMAL, characteristic_type_code TEXT, characteristic_data_type TEXT, characteristic_name TEXT, other_characteristic_details TEXT)

Give the names, details, and data types of characteristics that are not found in any product.
SELECT characteristic_name, other_characteristic_details, characteristic_data_type FROM characteristics EXCEPT SELECT t1.characteristic_name, t1.other_characteristic_details, t1.characteristic_data_type FROM characteristics AS t1 JOIN product_characteristics AS t2 ON t1.characteristic_id = t2.characteristic_id
SELECT "characteristic_name", "other_characteristic_details", "characteristic_data_type" FROM "characteristics" EXCEPT SELECT "t1"."characteristic_name", "t1"."other_characteristic_details", "t1"."characteristic_data_type" FROM "characteristics" AS "t1" JOIN "product_characteristics" AS "t2" ON "t1"."characteristic_id" = "t2"."characteristic_id"