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A professional-level summary covering key definitions, frameworks, and exam-relevant points.
DMBOK Definition
The DAMA DMBOK v2 defines Data Stewardship as "the most common label to describe accountability and responsibility for data and processes that ensure effective control and use of data assets." Stewardship is a formal function within a data governance programme, not an informal or ad-hoc activity.
The Four Key Data Roles
| Role | Accountability Level | Primary Responsibility |
|---|---|---|
| Data Owner | Strategic accountability | Defines data domain policy, approves access, resolves escalations |
| Data Steward | Operational responsibility | Maintains data quality, enforces standards, manages metadata |
| Data Custodian | Technical custody | Stores, backs up, and protects data (IT/DBA function) |
| Data User | Consumption | Accesses and uses data for business purposes |
Types of Data Stewards
The DMBOK recognises four steward types: Business Data Stewards (subject-matter experts focused on data meaning and business rules), Technical Data Stewards (IT professionals focused on data quality monitoring and technical standards), Operational Data Stewards (frontline staff responsible for data entry and maintenance quality), and Executive Data Stewards (senior leaders who champion governance at the strategic level, sometimes called Data Domain Owners).
CDMP Exam Significance
Data stewardship concepts appear across multiple CDMP domains, not just Data Governance. Questions about data quality, metadata management, and master data management all involve stewardship roles. The distinction between accountability (owner) and responsibility (steward) is one of the most frequently tested concepts in the entire CDMP exam.