Assigning a subclass reference to a superclass variable is safe ________.
a. because the subclass object has an object of its superclass.
b. because the subclass object is an object of its superclass.
c. only when the superclass is abstract.
d. only when the superclass is concrete.
b. because the subclass object is an object of its superclass.
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You cannot create a relationship between two tables unless there is at least one ________ key
Fill in the blank(s) with correct word
Identify at least two major ways you can improve report formatting productivity.
What will be an ideal response?
The term __________ expresses that we now have huge amounts of data available.
A. data warehouse B. data store C. big data D. large data
There are ____________________ fixed area tools that allow you to create circular or rectangular selections.
Fill in the blank(s) with the appropriate word(s).