I have found many information about how to implement standard custom fields, where there is one meta name and one meta value, but it is possible (both wp functions and tables are prepared) to use more values per one name and this is not covered anywhere.
E.g. custom post type: course - meta fields: dates. I want to add more than one date per course.
And now something even more difficult - more values! E.g. imagine I want to add dates with corresponding places. Afaik this is nothing i could do with today wordpress meta as it have only post_id;meta_name;meta_value
any hint where i can find some information about such things?