Access Control
Domain: Internet & Web
🎯 Motivation
Rules defining who can access what. Read, write, execute permissions for each resource.
📋 Concrete Example
Access control: document grades.pdf: Alice (read, write), Bob (read), Carol (none). Each user has specific permissions for each resource. Enforced by the system.
🔗 Analogy
Access control is like room keycards in a school - students can enter classrooms, teachers can enter the staff room, the principal can enter anywhere. Each person has different access to different rooms.