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The "Document_revisions" page has been changed by JanLehnardt: http://wiki.apache.org/couchdb/Document_revisions?action=diff&rev1=5&rev2=6 Comment: add ContributorGroup link + <<Include(EditTheWiki)>> + == Overview == CouchDB does not overwrite updated documents in place, instead it creates a new document at the end of the database file, with the same `_id` but a new `_rev` identifier. This type of storage system is space-wasteful so regular [[Compaction]] is needed to reclaim disk space. Note that the older revisions are not available to [[Views]].
