RBAC (role-based), ABAC (attribute-based) and FGAC (fine-grained access control) are complementary models for deciding access: RBAC by role, ABAC by attributes and context, FGAC down to the individual element such as a section, chunk or a column.
ABAC vs RBAC vs FGAC: access control for AI
AI raises the bar: a single knowledge base must serve many roles with controls precise enough to govern information, not just a file. Kynexa combines RBAC, ABAC and FGAC and adds purpose and intent, so policy can be both broad and surgical.