Where you use each field and what you use it for depends on the context. The furigana can be used for search, sorting or display. It's most useful stored separ

Where you use each field and what you use it for depends on the context. The furigana can be used for search, sorting or display. It's most useful stored separately. It's also not necessary to display it nicely with the ruby text as it's just a name, so dump it anywhere on the screen where someone can find it is good enough. Furigana displayed with Ruby text is useful as a reading aide in proper passages of text, usually reserved for rare words one is not expected to know and/or as a guide for children in texts aimed at younger readers. You have to put yourself in the position of an overworked, underpaid call center worker with a CRM in front of the who has just been phoned up by a customer called Junko and they are now tasked with locating which record in the system belongs to this customer. You see, there are something on the order of 4 or 5 different representations of this name in Kanji. If you weren't able to search by Furigana the call center staff would have to enquire which kanji it's made up of and then receive a verbal description of the radicals the kanji is composed of and in what order. Now once they're able to find all of the "Junko"s in the system they need to narrow it down. If they were simply presented a fullname with no furigana they might well run into the prickly problem of not actually being able to read the rest of the name. At which point the conversation gets awkward again.