10. One or more non-transitory machine-readable media having program code for a data modeler stored therein, the program code comprising instructions to: infer a first schema corresponding to a first database based, at least in part, on identification of statistically significant data fields determined from entities of the first database, wherein the first database does not have a defined schema, wherein statistically significant data fields are determined relative to a number of records in the first database or determined relative to a number of indications for each data field in the first database; retrieve, from a second database, a second schema, wherein the second database has a defined schema; generate a unified data model based, at least in part, on the first schema and the second schema; and migrate data from the second database to the first database using the unified data model.
10. One or more non-transitory machine-readable media having program code for a data modeler stored therein, the program code comprising instructions to: infer a first schema corresponding to a first database based, at least in part, on identification of statistically significant data fields determined from entities of the first database, wherein the first database does not have a defined schema, wherein statistically significant data fields are determined relative to a number of records in the first database or determined relative to a number of indications for each data field in the first database; retrieve, from a second database, a second schema, wherein the second database has a defined schema; generate a unified data model based, at least in part, on the first schema and the second schema; and migrate data from the second database to the first database using the unified data model. 11. The machine-readable storage media of claim 10 , wherein the instructions to migrate data from the second database to the first database using the unified data model comprise instructions to: read the data from the second database according to the second schema; transform the data of the second database into data compatible with the unified data model; transform the data compatible with the unified data model into data compatible with the first schema; and write the data compatible with the first schema to the first database in accordance with the first schema.