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 Configuring Siebel Business Applications > Architecture of Siebel Business Applications > About the Siebel Object Architecture > 
Hierarchy of Object Types and Relationships
 
Siebel CRM builds an object that resides in an upper layer on top of an object that resides in a lower layer. For example, an applet references a business component, a view references a business object, and a field references a column. Figure 2 describes the relationships that exist between the major object types that Siebel CRM uses. 
Figure 2.	Relationships and the Major Object Types That Siebel CRM Uses
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