1. The string constant 'Roger''s' will be stored as _______.   Roger''s   Roger s   Roger's   Rogers   Hint Half-n-half Clue   2. The data type used to store variable length bit strings is _______.   BIT VARYING(length)   BIT(length)   VARBIT2(length)   VARBIT(length)   Half-n-half Clue   3. SQL is platform independent.   True   False   4. To represent a national character set literal, it has to be preceded by _______.   NC   C   CN   N   Half-n-half Clue   5. SQL stands for _______.   Structural Query Language   Structured Query Language   Structured Question Language   Systematic Query Language   Half-n-half Clue   6. Which of the following symbolic constant yields the current date?   PRESENT_DATE   CURRENT_DATE   NOW   TODAY   Half-n-half Clue   7. _______ value is used to represent unknown or undefined values.   NULL   Blank   ZERO   Half-n-half Clue