$2\mathrm{.}1\mathrm{.}1$: Relational model.

$574040\mathrm{.}3856690.$qx$3$zqy$7$

Classify each of the following as a relational rule or a business rule.Different columns of the same table must have different names.When a row is deleted, all related rows should be deleted.Values may not be repeated in a particular column.