The predicate in a where clause can involve Boolean operations such as and. The result of true and unknown is               false and unknown is            while unknown and unknown is            

Related MCQs

• The              clause allows us to select only those rows in the result relation of the           clause that satisfy a specified predicate.
• The result of           unknown is unknown.
• A Boolean data type that can take values true, false, and                 
• The                  clause is used to list the attributes desired in the result of a query.
•            clause is an additional filter that is applied to the result.
• ……………… clause is an additional filter that is applied to the result.
• Which of the following specifies a boolean expression that must be true for the trigger to fire?
• For like predicate which of the following is true. i) % matches zero of more characters. ii) _ matches exactly one character.
• Using the              clause retains only one copy of such identical tuples.
• The ORDER BY clause can only be used in