Quote:
Originally Posted by jist
Is there information or an overview to be found somewhere that explains what is—or can be—stored in the epub file itself (which you won't loose when copying the ebook somewhere), and what is stored in Calibre's metadata.db and the accompanying opf file?
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The database is the master copy, the metadata.opf is a backup copy and can be used when restoring your library. Unless you use Polish, ModifyEpub or a similar tool, the content.opf file internal to the epub is not modified in the library. When you Send to device for Save to disk, the content.opf will be updated to match the metadata in the database.
Hope this is of some help to you.