An example of a small input device that uses optics to move the display cursor is a(n) __________

The DBMS_ERROR_CODE procedure contains the error code for the most recent FRM- error that occurred.

a. true b. false

(Simple Calculator Application) In this exercise, you will add functionality to a simple calculator application. The calculator will allow a user to enter two numbers in the Text- Boxes. There will be four Buttons—labelled +, -, / and *. When the user clicks the Button labelled as addition, subtraction, multiplication or division, the application will perform that operation on the numbers in the TextBoxes and display the result. The calculator also should clear the calculation result when the user enters new input. displays the com- pleted calculator.

a) Copying the template to your working directory.
b) Opening the application’s template file.
c) Coding the addition Click event handler.
d) Coding the subtraction Click event handler.
e) Coding the multiplication Click event handler.
f) Coding the division Click event handler.
g) Clearing the result.
h) Running the application.
i) Closing the application.