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Name: CrossmarX
Address: Oudezijds Achterburgwal 141 E, Amsterdam, NH, 1012 DG
Telephone: 020 420 8151

Some classes have an hierarchical structure. This means that an object of a class might have a parent and might have children. The file system on your computer is one of the best examples. A directory might have a parent directory and one or more sub directories. In business applications a hierarchical structure is most frequently used for classifications. Like 'type of organization' or 'type of object'.

Follow the next steps to define a hierarchical structure in a class:

create a class person manager with at least a decimal sortfield and a foreign key field Manager to itself
go to the class properties:
1. set first name and last name as label fields
2. select "display as tree"
3. set sortfield sort direction "asc" at columns in table
go to the application and add child records of Person manager, it's important to set the sort field
reload Person manager to test the sort field