public void Update(AbstractConnection conn, AbstractTransaction trans, BasketballTeams teams)
        {
            SqlParameter id = new SqlParameter();

            id.ParameterName = "@Id";
            id.SourceColumn  = "Id";
            SqlParameter name = new SqlParameter();

            name.ParameterName = "@Name";
            name.SourceColumn  = "Name";
            SqlParameter surname = new SqlParameter();

            surname.ParameterName = "@Surname";
            surname.SourceColumn  = "Surname";
            SqlParameter telNumber = new SqlParameter();

            telNumber.ParameterName = "@TelNumber";
            telNumber.SourceColumn  = "TelNumber";
            SqlParameter email = new SqlParameter();

            email.ParameterName = "@Email";
            email.SourceColumn  = "Email";

            SqlDataAdapter adapter = new SqlDataAdapter();

            adapter.UpdateCommand = new SqlCommand(@"update Manager set Name = @Name, Surname = @Surname, TelNumber = @TelNumber, Email = @Email where Id = @Id", conn.Connection, trans.Transaction);
            adapter.UpdateCommand.Parameters.Add(id);
            adapter.UpdateCommand.Parameters.Add(name);
            adapter.UpdateCommand.Parameters.Add(surname);
            adapter.UpdateCommand.Parameters.Add(telNumber);
            adapter.UpdateCommand.Parameters.Add(email);

            SqlParameter id1 = new SqlParameter();

            id1.ParameterName = "@Id";
            id1.SourceColumn  = "Id";
            SqlParameter name1 = new SqlParameter();

            name1.ParameterName = "@Name";
            name1.SourceColumn  = "Name";
            SqlParameter surname1 = new SqlParameter();

            surname1.ParameterName = "@Surname";
            surname1.SourceColumn  = "Surname";
            SqlParameter telNumber1 = new SqlParameter();

            telNumber1.ParameterName = "@TelNumber";
            telNumber1.SourceColumn  = "TelNumber";
            SqlParameter email1 = new SqlParameter();

            email1.ParameterName = "@Email";
            email1.SourceColumn  = "Email";

            adapter.InsertCommand = new SqlCommand(@"insert into Manager(Name, Surname, TelNumber, Email) values(@Name, @Surname, @TelNumber, @Email)", conn.Connection, trans.Transaction);
            adapter.InsertCommand.Parameters.Add(name1);
            adapter.InsertCommand.Parameters.Add(surname1);
            adapter.InsertCommand.Parameters.Add(telNumber1);
            adapter.InsertCommand.Parameters.Add(email1);

            adapter.DeleteCommand = new SqlCommand(@"delete from Manager where Id = @Id", conn.Connection, trans.Transaction);
            adapter.DeleteCommand.Parameters.Add(id1);

            adapter.Update(teams, "Manager");
        }