TForm1 = class(TForm)
Image1: TImage;
ADOConnection1: TADOConnection;
ADOQuery1: TADOQuery;
ADOQuery1IconID: TAutoIncField;
ADOQuery1IconName: TStringField;
ADOQuery1Icon: TBlobField;
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
if not ADOQuery1.Eof then
ADOQuery1.Next
else
ADOQuery1.First;
Image1.Picture.Bitmap.Assign(ADOQuery1Icon);
end;
{при записи в поле обратная процедура присвоения типа
ADOQuery1.Edit; èëè ADOQuery1.Insert
ADOQuery1Icon.Assign(Image1.Picture.Bitmap);
ADOQuery1.Post;

}
end.