par Jan Kowalik Il y a 13 années
430
shop
In a database system, the primary focus is on managing various entities and their relationships. Key entities include items, orders, and users, each with specific attributes such as IDs, names, and statuses.
par Jan Kowalik Il y a 13 années
430
Plus de détails
wykres
select data,count from order_pack where item-id = 'x' and data = 'last'
=> users.id
skala: 1-5
