av Jan Kowalik för 13 årar sedan
379
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.
av Jan Kowalik för 13 årar sedan
379
Mer av detta
wykres
select data,count from order_pack where item-id = 'x' and data = 'last'
=> users.id
skala: 1-5
