Role-Based Access Control (RBAC)
Definition
Role-Based Access Control (RBAC) is a security model in which a user's access to data and system functions is determined by their assigned role (e.g., teacher, bursar, headteacher) rather than by individual permissions granted per user.
Full Explanation
Role-Based Access Control (RBAC) is a fundamental security architecture principle where permissions to view, edit, create, or delete information within a software system are grouped into roles, and users are assigned to those roles rather than receiving individual permissions directly. In a school management system, typical roles include student, parent, class teacher, subject teacher, head of department, bursar, admissions officer, librarian, headteacher, and system administrator, each with a precisely defined set of permitted actions. RBAC is critical in schools because it ensures that a class teacher can view and enter scores for their own students but cannot alter another teacher's records or access financial data; a parent can view their own child's information but not another student's. Beyond access security, RBAC is important for data privacy compliance, Ghana's Data Protection Act and Nigeria's NDPR require that personal data is only accessible to those with a legitimate purpose. A well-configured RBAC system also creates an audit trail, since every action is logged against a specific user and role.
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