Question

Which of the following rules does not apply to column names in Oracle 12c?​

Answer 1

Column names in Oracle 12c have certain rules, but they do not need to be unique within a table.

Step-by-step explanation:

In Oracle 12c, there are several rules that apply to column names:

1. Column names must be between 1 and 30 characters in length.
2. Column names cannot start with a number or contain any special characters except for the underscore (_).
3. Column names are case-insensitive, meaning 'EMPLOYEE' is considered the same as 'employee'.

However, there is no specific rule that states column names must be unique within a table.