Exam 11: Multiple Classes and Inheritance

To ensure that variables declared in a base class may be accessed by its subclasses but not by other classes, the variables should be declared with ____ access.

The processing in the ____ tier ensures that valid data is entered into the program for processing in the business tier.

A ____ text file can be read into programs such as Microsoft Excel and Microsoft Access to import the data into the application.

Case 11-1 Your colleague Jason is trying to clarify the three-tier program structure to you and he thinks that providing some practical examples will make it easier to explain it to you. Jason offers you the example of a form that accepts user input in an application geared to allow a fundraising operation to track the donations it receives. Which of the following tiers contains the data entry form for donations?

Variables in a base class that are declared with ____________________ access can be referenced only by subclasses but not by outside classes.

Data that is ____ remains after the program is terminated.

When using inheritance, the class that provides attributes to be inherited is called the ____ class.

The WriteLine procedure will ____.

If the developer writes no code for a class ____, Visual Basic automatically generates any processing that must be accomplished to prepare the object for use.

Case 11-1 Your colleague Jason is trying to clarify the three-tier program structure to you and he thinks that providing some practical examples will make it easier to explain it to you. In the same fundraising database, which tier does Jason tell you contains the code that allows you to save donations to permanent storage, or to open a record for a donor listing all of her gifts to the institution?

When using inheritance, a subclass cannot use the procedures within the base class.

When designing a program using the three-tier approach, a primary rule is that classes in the presentation tier can communicate only with classes in the ____ tier.

The persistence tier, sometimes called the _________________ tier, contains the classes required to read and write data from permanent storage.

An outside class cannot call an overridable procedure in the subclass.

The ____ keyword is used to declare a variable that will contain the address of an object created from a class.

Which of the following contains the correct code to create and instantiate an object named MyStudent from a class named Student?

Whenever inheritance is used, the subclass must fit into a(n) ____________________ relationship with the base class.

Data access tier is another name for the presentation tier. _________________________

The code in a(n) ____ procedure executes before any other code in an object.

When a function name in a subclass is preceded by the ____________________ keyword, the function in the subclass will override a function with the same name in the base class when the function in the subclass is called.