When using a packaged function in a query, what is true?

  1. a) The COMMIT and ROLLBACK commands are allowed in the packaged function.

  2. b) You can not use packaged functions in a query statement.

  3. c) The packaged function cannot execute an INSERT, UPDATE, or DELETE statement against the table that is being queried.

  4. d) The packaged function can execute and INSERT, UPDATE, or DELETE statement against the table that is being queried if it is used in a subquery.

  5. e) The packaged function can execute an INSERT, UPDATEM or DELETE statement against the table that is being queried if the pragma RESTRICT REFERENCE is used.


Correct Option: C

AI Explanation

To answer this question, you need to understand the concept of using packaged functions in a query.

Option A) The COMMIT and ROLLBACK commands are allowed in the packaged function - This option is incorrect. The COMMIT and ROLLBACK commands are not allowed in a packaged function. These commands are used to control transactional behavior, and they should be executed outside the packaged function.

Option B) You cannot use packaged functions in a query statement - This option is incorrect. Packaged functions can be used in a query statement.

Option C) The packaged function cannot execute an INSERT, UPDATE, or DELETE statement against the table that is being queried - This option is correct. Packaged functions are not allowed to execute INSERT, UPDATE, or DELETE statements against the table that is being queried. They are typically used for data retrieval or computation purposes.

Option D) The packaged function can execute an INSERT, UPDATE, or DELETE statement against the table that is being queried if it is used in a subquery - This option is incorrect. The packaged function cannot execute INSERT, UPDATE, or DELETE statements against the table that is being queried, regardless of whether it is used in a subquery or not.

Option E) The packaged function can execute an INSERT, UPDATE, or DELETE statement against the table that is being queried if the pragma RESTRICT REFERENCE is used - This option is incorrect. The pragma RESTRICT REFERENCE is used to restrict the use of certain database objects within a package. It does not allow the packaged function to execute INSERT, UPDATE, or DELETE statements against the table that is being queried.

Therefore, the correct answer is Option C. The packaged function cannot execute an INSERT, UPDATE, or DELETE statement against the table that is being queried.

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