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KC Star V9 Simplified puts the permission check inside the measure calculation itself - a HasPermission call in the CASE that computes each aggregate. Read-time filtering, column masking, and an access level the view derives on the fly. The whole model, inlined.
KC Star V9 Simplified's schema is four permission tables and five seeded personas - full access, online-only, store-only, delivery-and-quotes, commission-only. GetFilteredSalesData takes an employee and returns exactly their slice. Permissions you can read in one table.
When KC Star V9 denies a measure, it returns NULL, not zero - and the difference matters enormously once those values flow into aggregates. Here is the semantics of denial, the PermissionContext that records it, and why a redacted zero would quietly corrupt every total downstream.
Fusing per-employee permissions with per-change recalculation multiplies work by headcount. KC Star V9 ships both the naive per-employee implementation and an optimised per-permission-group one that collapses a thousand employees into seven groups. The most important design call in the version.
KC Star V9 fuses V8's intelligent recalculation with V6's permission-aware calculations - and folds the employee and their permissions into the very hash that decides what to recompute. Kicking off the series where two engines meet in one version, and complexity meets its reckoning.
KC Star V6's GetFilteredAnalyticalData returns different rows to different callers - each row self-selects by the caller's clearance. Two personas, one query, two answers. Here is how permission-filtered aggregates work, and where the filtering really lives.
KC Star V6 decides access by comparing a single integer. An employee's highest LevelOrder against the level being requested - Global sees everything below it, an employee sees only themselves. Coarse, cascading, and a deliberate trade against per-object ACLs.
KC Star V6 layers role-based access control onto the org hierarchy - eight permission types, five hierarchy levels, and grants that expire. Kicking off the series where the warehouse learns that not everyone should see every number.
