Automatically converting data between different schemas. A client request to read data from a front end schema node to a back end schema node is received. The nodes may be constructed according to different schemas, whereby a front end data object and a back end data object are created with a common interface and a common set of property types for wrapping around respective front end and back end data objects. The data is then read from the front end schema node to the back end schema node via the front end data object and the back end data object according to the common interface and the common set of property types. A SchemaState Object provides a listing of property pairs for constructing the front end and back end data objects, each with at least one property from the listing of property pairs.