Stefan Aulbach Torsten Grust Dean Jacobs Alfons Kemper Jan Rittinger Multi-tenant databases for software as a service: schema-mapping techniques. 1195-1206 2008 SIGMOD Conference http://doi.acm.org/10.1145/1376616.1376736 conf/sigmod/2008 db/conf/sigmod/sigmod2008.html#AulbachGJKR08