We don't have any back-end or RFC to database table. So, we have made a dummy implementation of get_entity, get_entityset... such that we are providing data through debugging.
DATA Model:
Employee Entity { Emp_name, **Emp_id**, Emp_address}
Company Entity { Company_name, **Company_id**, Company_type}
Education Entity {qual_name, qual_type, **college_id**, year_of_passing}
Associations:
EmployeeToCompany;
EmployeeToEducation;
Though the data appears in internal table while debugging, it doesn't get displayed during output.