Question

What are the levels of abstraction in dbms?

Answer 1

Hope it helps
Physical level: This is the lowest level of data abstraction. It describes how data is actually stored in database. You can get the complex data structure details at this level. Logical level: This is the middle level of 3-level data abstraction architecture

Answer 2

 It describes how data is actually stored in database. You can get the complex data structure details at this level. Logicallevel: This is the middle level of 3-leveldata abstraction architecture.