Multiple Inheritance SQL:1999 and SQL:2003 do not support multiple inheritance If our type system supports multiple inheritance,we can define a type for teaching assistant as follows: create type Teaching Assistant under Student,Teacher To avoid a conflict between the two occurrences of department we can rename them create type Teaching Assistant under Student with (department as student dept ) Teacher with (department as teacher dept Database System Concepts-5th Edition,Aug 9,2005. 9.14 ©Silberschat乜，Korth and SudarshanDatabase System Concepts - 5 9.14 ©Silberschatz, Korth and Sudarshan th Edition, Aug 9, 2005. Multiple Inheritance SQL:1999 and SQL:2003 do not support multiple inheritance If our type system supports multiple inheritance, we can define a type for teaching assistant as follows: create type Teaching Assistant under Student, Teacher To avoid a conflict between the two occurrences of department we can rename them create type Teaching Assistant under Student with (department as student_dept ), Teacher with (department as teacher_dept )