Introduction to SQL
What does the following query find?(SELECT DISTINCT r.sidFROM boats b, reserves rWHERE b.bid = r.bidAND b.color = 'red')MINUS(SELECT DISTINCT r.sidFROM boats b, reserves rWHERE b.bid = r.bidAND b.color = 'green')

Find the sailor IDs of all sailors who have reserved red boats but not green boats
Find the sailor IDs of at least one sailor who have reserved red boats but not green boats
None of These
Find the sailor Ids of atmost one sailor who have reserved red boats but not green boats

ANSWER DOWNLOAD EXAMIANS APP

Introduction to SQL
NULL is

the same as 0 for integer and blank for character
the same as 0 for integer
not a value
the same as blank for character

ANSWER DOWNLOAD EXAMIANS APP

Introduction to SQL
Find the SQL statement below that is equal to the following: SELECT NAME FROM CUSTOMER WHERE STATE = 'VA';

SELECT NAME IN CUSTOMER WHERE STATE IN ('VA');
SELECT NAME IN CUSTOMER WHERE STATE = 'V';
SELECT NAME IN CUSTOMER WHERE STATE = 'VA';
SELECT NAME FROM CUSTOMER WHERE STATE IN ('VA');

ANSWER DOWNLOAD EXAMIANS APP