Which of these is NOT an Oracle "database option?"

Implicit Cursor works when:

What happends when you execute one transcaction and then truncate another table?

You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?

This protects the library cache from becoming corrupted by concurrent modifications by two sessions or by one session trying to read information that is being modified by another one.

A "virtual" table name to query the current time is:

What is true about this set of statements? CREATE TABLE dept (deptno NUMBER(2), dname VARCHAR2(14), loc VARCHAR2(13)); ROLLBACK; DESCRIBE DEPT;

What operator would you choose to prevent this Oracle error message? ORA-01427:single -row subquery returns more than one row

When a user process fails, this background process will clean up after it:

Order the following entities from the smallest to the largest:

What command is used to restore an "accidentally" dropped table?