U=1 (L-3) View of Data.

₹ 10

✺ View of Data ✺ ✺Data Abstraction✺ ✺Physical Level (Internal Level)✺ →Physical Schema ✺Logical level (Conceptual Level)✺ →Physical Data independence ✺View level (External Level)✺ →Instance →Schema →Physical schema →Logical schema →Subschemas