public List <Establishment> GetEstablishments()
        {
            PersonnelDBContext personnelDBContext = new PersonnelDBContext();

            return(personnelDBContext.Establishments.ToList());
        }
        public List <Role> GetRoles()
        {
            PersonnelDBContext personnelDBContext = new PersonnelDBContext();

            return(personnelDBContext.Roles.ToList());
        }
        public List <Employee> GetEmployees()
        {
            PersonnelDBContext personnelDBContext = new PersonnelDBContext();

            return(personnelDBContext.Employees.ToList());
        }