1. The size of SQL data types differ across platforms.   True   False   2. The data type used to store variable length bit strings is _______.   BIT(length)   BIT VARYING(length)   VARBIT2(length)   VARBIT(length)   Hint Half-n-half Clue   3. _______ value is used to represent unknown or undefined values.   Blank   NULL   ZERO   Half-n-half Clue   4. SQL is a _______ language.   procedural   non-procedural   object-oriented   Half-n-half Clue   5. SQL is a record level language.   True   False   6. SQL statements can be executed without a DBMS.   True   False   7. The string constant 'Roger''s' will be stored as _______.   Roger''s   Rogers   Roger's   Roger s   Half-n-half Clue