What is a static variable? How is it different from a class-level variable?
What will be an ideal response?
A static variable is a procedure-level variable that remains in memory and also retains its value even when its declaring procedure ends. Like a class-level variable, a static variable is not removed from the computer's main memory until the application ends. Unlike a class-level variable, a static variable can be used only by the procedure in which it is declared.
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A constant is very similar to variable, expect that:
A. A constant's value cannot be changed without generating an error B. A constant's value is limited to string data C. Constants can only be defined with local scope D. None of the above
The Database Documenter tool can provide information about when a field or other object was last modified.
Answer the following statement true (T) or false (F)
What is an interlaced or progressive image format? What are the advantages and disadvantages?
What will be an ideal response?
List output/message from the following queries/statements. (Use tables created in the Chapter 4 Lab Activity)
1. SELECT First || ‘ ‘ || Last “Name”, BirthDate FROM student; 2. SELECT DISTINCT (MajorId) FROM student; 3. SELECT * FROM location ORDER BY Building, Capacity DESC; 4. SELECT Lname, Fname, (Salary / 12) MONTHLYSALARY FROM employee ORDER BY MONTHLYSALARY; 5. DELETE FROM faculty WHERE DeptId=2;