[Falell]

Bloomberg's comdb2 does something similar, using the SQL grammar and query planner but swapping out the storage layer. To quote from their paper:

"In SQLite a query plan is compiled into a bytecode program that is executed by a virtual machine, named Virtual DataBase En-gine (VDBE)... In the original SQLite implementation the VDBE operates on the real B-trees of the database... In contrast the Comdb2 VDBE operates on the cdb2 abstraction of a table during the OCC phase of transaction execution..."

http://www.vldb.org/pvldb/vol9/p1377-scotti.pdf