IBDatabase1.DatabaseName := 'C:\base.FDB';
IBDatabase1.Params.Clear;
IBDatabase1.Params.Add('USER '+QuotedStr('SYSDBA')+'');
IBDatabase1.Params.Add('PASSWORD '+QuotedStr('masterkey')+'');
IBDatabase1.Params.Add('PAGE_SIZE = '4096'');
IBDatabase1.SQLDialect := 3;
IBDatabase1.CreateDatabase;