2. þ D. Subquery nesting can be done to many levels.
ý A, B, and C. A and C are incorrect because subqueries can be nested.
B is incorrect because the number of rows returned is not relevant to nesting
subqueries, only to the operators being used.
Bạn đang xem 2. - OCA OCP ORACLE DATABASE 11G A LL IN ONE EXAM GUIDE P59 PDF