Data steward

From Science Europe Data Glossary

Definition: a data steward is a person responsible for the management of data objects including metadata.
Explanation: data stewards have a specialist role that incorporates processes, policies, guidelines and responsibilities for administering an organization's data in compliance with policies and/or regulatory obligations. A data steward is commonly responsible for data content, context, and associated business rules.
Reference: http://en.wikipedia.org/wiki/Data_steward
See also: data custodian