Task 9: 1. Construct an ER Diagram for Call Center Management System to manage daily operations including forecasting, scheduling, employee training, reporting and all customer interactions. Call centre management can be modernised with workforce optimisation (WFO) solutions. Pay attention to identify entities, different types of attributes, relationships and also generalization or specialization of entities. C01, K2 2. Consider the following relational schema for the COE office application. CO2, K3 Student (Rollno, Name, Dob, Gender, Doa, Bcode); Branch (Bcode, Bname, Dno); Department (Dno, Dname); Course (Ccode, Cname, Credits, Dno); Branch_Course (Bcode, Ccode, Semester); Enrolls (Rollno, Ccode, Sess, Grade);(relationship) Give an expression in SQL for each of the following queries a. to create table and also to describe the table b. to implement check constraint for gender and Date of Admission (DOA) 9