1. Define the domain
Capture boundaries, subdomains, business capabilities, key systems, datasets, and critical data elements.
Enterprise data governance tool
Turn data domains into an actionable governance map
Define domain boundaries, ownership, systems, critical data, consumers, dependencies, maturity, and priorities in one structured assessment.
No external APIs are used. Results are deterministic and depend on the information you provide.
How it works
Complete the domain profile, review the deterministic assessment, then export the map for governance planning.
2. Assess governance
Record ownership, stewardship, maturity, quality, documentation, regulatory relevance, and priority.
3. Act on the result
Use the map, score, ownership-gap analysis, warnings, and prioritised actions in governance workshops.
Data domain assessment
Required fields are marked with an asterisk. Comma-, semicolon-, or line-separated entries are accepted.
Domain profile
Complete the form to generate a result.
Privacy note: This page does not call external services. Calculations run locally in the browser and, for non-JavaScript submission, in the current PHP session. Data is not stored unless the wider site deliberately adds secure server-side storage.
Methodology and limitations
The mapper combines domain definition coverage, accountability, dependency visibility, and governance readiness into a transparent 0–100 score.
How to use the result
Use the output to prepare domain workshops, confirm accountable roles, prioritise metadata and quality work, and identify dependencies requiring validation. Re-run the assessment after material changes.
Score thresholds
- 80–100: Strategic
- 65–79: Managed
- 45–64: Developing
- 0–44: Foundational
Limitations
The mapper relies on user-supplied information and does not inspect systems, contracts, data flows, or regulatory obligations. It should not replace formal architecture, audit, legal, privacy, security, or compliance review.
For portfolio comparison, apply the same interpretation guidance and evidence standard across all domains.
Related tools
Continue from domain definition into catalogue, glossary, quality, policy, and stewardship work.
Frequently asked questions
Practical guidance for applying domain mapping in enterprise governance.
What is a data domain?
A data domain is a coherent area of enterprise data aligned to business meaning, accountability, processes, and outcomes, such as Customer, Product, Finance, or Workforce.
How is a subdomain different from a domain?
A subdomain is a narrower, logically distinct part of a parent domain. For example, Customer Identity and Customer Interaction may sit within the Customer domain.
Who should own a data domain?
The accountable owner should be a senior business role with authority over domain outcomes, priorities, funding, risk acceptance, and cross-functional decisions.
What does a data steward do?
A steward coordinates definitions, quality issues, metadata, access, controls, and operational decisions. Stewardship supports the owner but does not replace accountability.
How should maturity be scored?
Use level 1 for ad hoc practices, level 2 for repeatable practices, level 3 for defined practices, level 4 for measured and managed practices, and level 5 for continuously improved practices.
What counts as a critical data element?
A critical data element is a field or attribute whose failure could materially affect decisions, customers, reporting, operations, compliance, finance, or risk.
How do I prevent circular parent-child relationships?
Do not assign a domain as its own parent or repeat the parent as a subdomain. In a portfolio process, maintain unique identifiers and validate the complete hierarchy before publication.
How should dependencies be mapped?
Record the domain, system, process, or team that supplies data upstream and the consumers or processes affected downstream. Include frequency, interface, control owner, and failure impact where possible.
Can I compare scores across domains?
Yes, provided assessors use the same evidence standard, scoring guidance, and review process. Treat large differences as prompts for investigation rather than proof of performance.
Does the score prove compliance?
No. The score is an internal planning indicator based on supplied information. Compliance requires assessment against applicable obligations and supporting evidence.
How often should a domain map be reviewed?
Review at least quarterly for high-priority domains and whenever ownership, systems, regulations, major datasets, operating models, or business capabilities change.
Where is submitted information stored?
This implementation does not transmit data externally. Basic submission is processed in the current PHP request and session unless the site owner deliberately adds secure storage.