I am currently creating my first plugin, which displays the birthdays of the registered members.
Logically, the Birthdate should be stored with the other user data in the "x_users" table. However, I am unsure if it's a good idea in terms of upgradability to newer wordpress versions to alter that table.
Alternatively I could just create a new table.
What would you guys suggest? There's nothing like a "users_meta" table is there?