The people who manage data processes are, in the current data warehouse vernacular, called
data stewards. A plain, nonspecialized steward is defined in the dictionary as, “One who manages another’s property, finances, or other affairs.” Extending that definition for our purposes, a data steward is a person who manages information and activities that encompass data creation, capture, maintenance, decisions, reporting, distribution, and deletion. Therefore, a person performing any of these functions on a set of data is a data steward.
Courtesy: Information Management white paper on DataQuality