Why is using ORDER_PROC_2 as an alias potentially confusing?

Why is using ORDER_PROC_2 as an alias potentially confusing?

• A. Because there is a real table named ORDER_PROC_2 in the data dictionary.
• B. Aliases cannot be used with base tables.
• C. ORDER_PROC_2 is reserved for system use.
• D. Using aliases is not allowed.

Answer: (A)

Using ORDER_PROC_2 as an alias can be confusing because there is already a real table named ORDER_PROC_2 in the data dictionary. If the alias shares the same name as an existing object, readers might misinterpret the code as referring to the real table rather than the temporary alias, or vice versa. This name collision reduces readability and can lead to maintenance mistakes. Aliases are allowed with base tables, and there’s no rule prohibiting them here; the issue is simply the potential ambiguity from naming it the same as an existing object.

Using ORDER_PROC_2 as an alias can be confusing because there is already a real table named ORDER_PROC_2 in the data dictionary. If the alias shares the same name as an existing object, readers might misinterpret the code as referring to the real table rather than the temporary alias, or vice versa. This name collision reduces readability and can lead to maintenance mistakes. Aliases are allowed with base tables, and there’s no rule prohibiting them here; the issue is simply the potential ambiguity from naming it the same as an existing object.