11. A system, comprising: a memory adapted to store query authentication information and database device node identifiers; and a processor programmed to: receive a database query comprising a logical database table identifier, a data element, and at least one data source assurance indicator at a distributed database device within a distributed network of databases, where the at least one data source assurance indicator comprises a request to encrypt the data element received in the received query for authentication of distributed database devices that process the database query; encrypt the data element received in the received query based upon the at least one data source assurance indicator; form a data portion of a local query response to the database query comprising data retrieved from a local physical database table mapped by a local logical database table that matches the received logical database table identifier; add a distributed database device node identifier and the encrypted data element as an authentication portion of the local query response to authenticate the data portion of the local query response; store the authenticated local query response to the memory; and respond to the database query with at least the authenticated local query response.
11. A system, comprising: a memory adapted to store query authentication information and database device node identifiers; and a processor programmed to: receive a database query comprising a logical database table identifier, a data element, and at least one data source assurance indicator at a distributed database device within a distributed network of databases, where the at least one data source assurance indicator comprises a request to encrypt the data element received in the received query for authentication of distributed database devices that process the database query; encrypt the data element received in the received query based upon the at least one data source assurance indicator; form a data portion of a local query response to the database query comprising data retrieved from a local physical database table mapped by a local logical database table that matches the received logical database table identifier; add a distributed database device node identifier and the encrypted data element as an authentication portion of the local query response to authenticate the data portion of the local query response; store the authenticated local query response to the memory; and respond to the database query with at least the authenticated local query response. 17. The system of claim 11 , where the processor is further programmed to: forward the database query comprising the logical database table identifier, the data element, and the at least one data source assurance indicator to at least one additional distributed database device within the distributed network of databases; receive at least one distributed query response comprising a distributed database device node identifier and an additional encrypted data element associated with data returned from each distributed database device that processed the database query; and determine authenticity of each distributed database device that processed the database query based upon the additional encrypted data element and the distributed database device node identifier associated with each distributed database device that processed the database query.