products_options_values_to_products_options_id int not_null auto_increment comment(Primary key - unique identifier for each option-value association)
products_options_id int not_null comment(FK to products_options table - option identifier like Size, Color)
products_options_values_id int not_null comment(FK to products_options_values table - specific value like Small, Red)
--
primary products_options_values_to_products_options_id
unique unique_option_value products_options_id products_options_values_id
##
engine innodb
character_set utf8mb4
collate utf8mb4_unicode_ci