Implementing Bridge Design Pattern to Entity Framework

I'm doing my final project. I have to use Bridge Design Pattern with Entity Framework but I'm not sure how can I use these two and how can I do CRUD operations?

I'm implementing IDatamanagment interface to StudentData class.

My code goes like this:

    namespace BusinessLayer
{
   public class StudentData:IDataManagement<Ogrenci>
  {
        private List<Ogrenci> ogrenci = null;
        public int kimlikno { get; set; }
        public string ad { get; set; }
        public string soyad { get; set; }
        public DateTime dogumtarihi { get; set; }
        public string adres { get; set; }

        public void NextStudent()
        {
            if (kimlikno <= ogrenci.Count - 1)
            {
                kimlikno++;
            }
        }

        public void PriorStudent()
        {
            if (kimlikno > 0)
            {
                kimlikno--;
            }
        }

        public void AddStudent(Ogrenci t)
        {
            using (OgrenciDBEntities db = new OgrenciDBEntities())
            {
                db.Ogrenci.Add(new Ogrenci { Ad=ad, 
                    Soyad = soyad, 
                    DogumTarihi = Convert.ToDateTime(dogumtarihi), 
                    Adres = adres });
                db.SaveChanges();
            }
        }

        public void DeleteStudent(Ogrenci t)
        {
            if (kimlikno != 0)
            {
                using (OgrenciDBEntities db = new OgrenciDBEntities())
                {
                    Ogrenci ogr = db.Ogrenci.Where(o => o.KimlikNumarasi == kimlikno).FirstOrDefault();
                    db.Ogrenci.Remove(ogr);
                    db.SaveChanges();
                }
            }
        }

        public void ListStudent()
        {
            using (OgrenciDBEntities db = new OgrenciDBEntities())
            {
                var ogrenci = (from o in db.Ogrenci
                               select new
                               {
                                   kimlikno = o.KimlikNumarasi,
                                   ad = o.Ad,
                                   soyad = o.Soyad,
                                   dogumtarihi = o.DogumTarihi,
                                   adres = o.Adres
                               }
                                 ).ToList();
            }
        }

        public void UpdateStudent()
        {
            if (kimlikno != 0)
            {
                using (OgrenciDBEntities db = new OgrenciDBEntities())
                {
                    Ogrenci ogr = db.Ogrenci.Where(o => o.KimlikNumarasi == kimlikno).FirstOrDefault();
                    ogr.Ad = ad;
                    ogr.KimlikNumarasi = Convert.ToInt16(kimlikno);
                    ogr.Soyad = soyad;
                    ogr.DogumTarihi = dogumtarihi;
                    ogr.Adres = adres;
                    db.SaveChanges();
                }
            }
        }

    }
}