________ determine the amount of white space that displays at the top, bottom, left and right of the text in the document
Fill in the blank(s) with correct word
Margins
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Every JComponent has an instance variable called that enables the object to maintain references to all its registered listeners.
a. registeredListenerList b. listenerList c. registeredList d. eventListenerList
All of the following are true of the Show method of a form except:
a. using the Show method allows other forms to receive the focus b. the Show method allows a calling program to continue to process statements c. the displayed form must be closed before you can access other forms d. the Show method displays a modeless form
Which of the following modes causes new characters to be typed over existing ones?
A. Insert B. Overtype C. Replace D. Type Over
Consider the table Professor with attributes Id, Name, Dept, Salary, and Rank and primary key Id, and the statements:
where ssn is a host variable and sal is a literal.
(a) Give an ecient query plan for S1 and state what index (search key, clustered, nonclustered,
B+ tree, hash) is used.
(b) Now suppose, in addition to optimizing S1, we are equally concerned with optimizing the
execution of S2. Assuming sal is a large number (most rows do not satisfy the WHERE
clause) describe the query plan you would like the optimizer to use and any changes that
might need to be made to your previous answer. State what index (search key, clustered,
nonclustered, B+ tree, hash) is used for each statement. Explain your reasoning.
(c) Redo the previous part assuming that sal is a small number (most rows satisfy the
WHERE clause). Explain your reasoning.