1. A computer-implemented method for managing tenant-specific data sets in a multi-tenant system, comprising: receiving a request to convert a data set in a physical data store from a first type of multi-tenant deployment to a second type of multi-tenant deployment; retrieving tenant identification metadata identifying a tenant making the request; modifying the data set in the physical data store based on the second type of multi-tenant deployment; and modifying metadata associated with an abstraction layer to allow the modified data set to be accessed.