You want to write a query that prompts for two column names and the WHERE condition each time it is executed in a session but only prompts for the table name the first time it is executed.
The variables used in your query are never undefined in your session.
Which query can be used?

Which two statements are true about the PMON background process? (Choose two.)

Table EMPLOYEES contains columns including EMPLOYEE_ID, JOB_ID and SALARY.
Only the EMPLOYEE_ID column is indexed.
Rows exist for employees 100 and 200.
Examine this statement:

Which two statements are true? (Choose two.)

Evaluate these commands which execute successfully:

Which two statements are true about the ORD_ITEMS table and the ORD_SEQ sequence? (Choose two.)

Which three statements are true about Oracle synonyms? (Choose three.)