In your multitenant container database (CDB) that contains pluggable databases (PDBs), the HR user executes the following commands to create and grant privileges on a procedure: 

How can you prevent users having the EXECUTE privilege on the CREATE_TEST procedure from inserting values into tables on which they do not have any privileges? 

Answer options:

A. Create the CREATE_TEST procedure with definer’s rights.
B. Grant the EXECUTE privilege to users with GRANT OPTION on the CREATE_TEST procedure.
C. Create the CREATE_TEST procedure with invoker’s rights.
D. Create the CREATE_TEST procedure as part of a package and grant users the EXECUTE privilege the package.

C

If a program unit does not need to be executed with the escalated privileges of the definer, you should specify that the program unit executes with the privileges of the caller, also known as the invoker. Invoker`s rights can mitigate the risk of SQL injection. Incorrect Answers: A: By default, stored procedures and SQL methods execute with the privileges of their owner, not their current user. Such definer-rights subprograms are bound to the schema in which they reside. not B: Using the GRANT option, a user can grant an Object privilege to another user or to PUBLIC.