Definition
A reporting semantic layer gives Power BI and other reporting tools reusable definitions for common measures. Instead of every report rebuilding logic from raw Db2 for i tables, the semantic layer centralizes approved calculations and relationships.
- Sales
- Margin
- Inventory
- Backlog
- Customer status
- Aging
This reduces dashboard drift and unclear ownership.
- Conflicting numbers
- Uncontrolled extracts
- Weak security assumptions
- Refresh confusion