Quote:
Originally Posted by kovidgoyal
Hmm, it's a tough choice. Currently as far as I know, UUIDs are used in only two places (the OPDS feeds generated by the calibre content server and to set the identifier for a book when converting it to EPUB). This would break the second, but not catastrophically. On the other hand, altering the schema to add a remote_id column wont break anything catastrophically, since the only code that would depend on its existence would be the downloading code.
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UUIDs are used for device/book matching. Changing them would not be a good thing.