Purpose of a Root Object

Many designs use a root object to represent the business or computer system.

A Root object typically contains complete collections of objects of a particular type.

For instance, the root object for the lending library will have a collection of all books,
and probably a collection of all borrowers.

Instructions

1. In the Class Browser, select the Object class.
   
2. Select the Classes | Add... menu command.
   The Define Class dialog is displayed.
3. Enter LendingLibrary as the name.
   (There is already a Library system class)
4. Check you are creating a subclass of Object.
5. Select library as the map file.
6. Click the OK button. The Class Browser displays the new LendingLibrary class.
   
   

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