Nice to see that temporal or even bitempiral database systems get developed lately more and more (but most of the time just as extensions to an existing system), thus I enjoyed reading about your native approach.<p>Do you store all revisions in one huge LSM- tree indexed by the transactional start- and end-times?<p>I'm developing one myself (already started around 2005 or 2006 by a Ph.D. student) and I'm still eager to put forth the ideas of a versioned data store :-)