The ____________________ operator finds rows that contain a null value in the specified column.
Fill in the blank(s) with the appropriate word(s).
IS NULL
You might also like to view...
If a class is declared a friend of another class, typically the classes refer to each other. The classes cannot each be defined before the other. To refer to a class, the class must have been declared. This is accomplished by a
a) Backward declaration b) Forward declaration c) Class definition d) Placing a declaration of one class prior to the definition of the other. e) None of the above. If the classes are not defined in the order grantor of friendship then friend class, this relationship is impossible.
Discuss why schema control may be a useful facility for some applications.
What will be an ideal response?
When trying to find out about users, the gold standard is to watch a user in the context of the workplace. However, this isn't always possible. Who else in a company knows about the users? Suppose you are consulting company that sells computers and you needed to find out about the people who use this equipment. However, you cannot interview the users (customers) directly. Where would you turn? What departments or people would you consult? Name at least three.
What will be an ideal response?
In Java, source code is compiled into object code called ______________.
a. Bit-code b. Class code c. Method code d. Byte-code