12. An apparatus comprising: a processor; and a machine-readable medium having program code executable by the processor to cause the apparatus to, parse a set of records retrieved from a first database to identify a set of one or more data fields in each of the set of records, wherein the first database does not have a defined schema; determine statistically significant data fields of the set of data fields across the set of records, wherein statistically significant data fields are determined relative to a number of records in the set of records or determined relative to a number of indications for each of the set of data fields; identify a first plurality of database entities from the statistically significant data fields; determine, from a defined schema of a second database, a second plurality of database entities; and generate a unified data model for the first database and the second database based, at least in part, on the first and the second plurality of database entities.
12. An apparatus comprising: a processor; and a machine-readable medium having program code executable by the processor to cause the apparatus to, parse a set of records retrieved from a first database to identify a set of one or more data fields in each of the set of records, wherein the first database does not have a defined schema; determine statistically significant data fields of the set of data fields across the set of records, wherein statistically significant data fields are determined relative to a number of records in the set of records or determined relative to a number of indications for each of the set of data fields; identify a first plurality of database entities from the statistically significant data fields; determine, from a defined schema of a second database, a second plurality of database entities; and generate a unified data model for the first database and the second database based, at least in part, on the first and the second plurality of database entities. 19. The apparatus of claim 12 , wherein a database entity of the first database comprises information related to one or more data fields indicated in a document, a set of key value pairs, a column family, or a graph node of the first database and a database entity of the second database comprises information related to one or more data fields indicated in a database table.