Kinds of Data: Classes, Properties, and Relationship Types

You can begin planning your information model by answering these questions:

• What kinds of objects will the tool store? That is, what are the classes to which the tool's objects must conform?
  
  
• What kinds of relationships will the tool store? That is, what are the relationship types that describe how objects can be related?
  
  
• What properties apply to the objects of each class or the relationships of each relationship type?