Identifying available attributes. Base and Extended table.
The concept of base table and the related concept of extended table are basic in GeneXus for they enable us to recognize the entity with which we are working at every moment, thought from a more conceptual viewpoint that relates less to the physical model.
![Начало VHS Союз-23. Сборник лучших видеоклипов (Союз-Видео, 1998) [720p]](https://images.mixrolikus.cc/video/RjM3x5-tYRU)
