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Also known as: Internal Code Sets, Enterprise Reference Data
Organization-specific code lists and value sets used to classify, validate, and harmonize internal data across applications.
DESCRIPTION
Proprietary or internal reference data comprises code lists, categories, and enumerations created and governed within an organization. Examples include internal product hierarchies, custom statuses, or risk ratings. These values drive validation, transformation, and reporting consistency across systems. Strong stewardship ensures clear definitions, versioning, and change control. Mapping to industry standards may be needed for interoperability. Good practices include documentation in a business glossary and distribution via authoritative services.
ALTERNATIVE DEFINITIONS
IBM
Reference data is a class of data used to categorize other data.
Highlights the categorization role; internal reference data is the enterprise-maintained subset.
Wikipedia
Reference data is data that is used to classify or categorize other data.
General definition applicable to both internal and external code sets.
Informatica
Reference data consists of permissible values that other data fields can take.
Emphasizes controlled permissible values for validation and consistency.
RELATED TERMS
Reference Data Master Data Governance Data Stewardship Value Set Data Quality Data Glossary Data Discovery Platform
COMPETING TERMS
RELATIONS
- Broader: Reference Data
KNOWLEDGE AREAS
Reference & Master Data Data Management Data Governance Metadata Management
TARGET AUDIENCE
Data Steward Data Governance Manager Data Architect Chief Data Officer Data Management Consultant Information Analyst
EXTERNAL SOURCES
- Wikipedia - Reference data
- ISO - ISO 8000 reference data topic
- Microsoft - Using reference datasets
- IBM - RDM overview and practices
TOP QUESTIONS
Why maintain Proprietary/Internal Reference Data centrally?
Central stewardship prevents divergence of codes across systems, ensures consistent meaning, and simplifies change management and reporting.
Category: Governance
How does Proprietary/Internal Reference Data differ from Industry Reference Data?
Internal reference data is organization-defined; industry reference data is standardized by external bodies for wide interoperability.
Category: Comparison
What controls are needed for Internal Reference Data?
Versioning, approval workflows, impact analysis, and lineage to dependent systems are critical controls.
Category: Requirements
How do I distribute updated Internal Reference Data?
Use API-based reference data services, publish to catalogs, and automate synchronization to downstream systems.
Category: Implementation
What are common mistakes managing Internal Reference Data?
Allowing unmanaged local code lists, lacking definitions, and no change control cause inconsistency and reconciliation costs.
Category: Mistakes
How to map Internal Reference Data to standards?
Create crosswalk tables or SKOS mappings, and track equivalence with strong metadata and quality checks.
Category: Guidance
What risks arise from poor Internal Reference Data management?
Incorrect reporting, regulatory breaches, and failed integrations can result from inconsistent codes.
Category: Risks
Which roles own Internal Reference Data?
Data stewards and domain owners, governed by a data governance council, typically own definitions and changes.
Category: Roles
How often should Internal Reference Data change?
As needed for business evolution; manage change windows and communicate downstream impact proactively.
Category: Lifecycle