Hello aspirant, some of the best books to learn Data base management systems(DBMS ) are-

• Database System Concepts - 6th edition - Avi Silberschatz
• Database Systems - A Practical Approach to Design, Implementation & Management By Thomas Connolly, Carolyn Begg
• Fundamentals of Database Systems - Elmasari , Navathe
• Database Management Systems By Raghu Ramkrishnan, Gehrke

Thank you.