Answer 1

This will help you .
https://beginnersbook.com/2015/04/data-models-in-dbms/#:~:text=Object%20based%20logical%20Models%20%E2%80%93%20Describe,the%20conceptual%20and%20view%20levels.&text=Record%20based%20logical%20Models%20%E2%80%93%20Like,with%20records%2C%20fields%20and%20attributes.