Column Type Definitions

The following table provides descriptions for the types of columns in the Siebel database.

Column Type	Description
Data (Public)	This is the general type for most columns.
Denormalized	This is the type for a column that holds a value denormalized from another column. Denormalized columns are only supported in special situations and cannot be added as part of customization.
Extension	These are columns that belong to an extension table or extension columns in a base table. Those columns are used to define customized fields in a business component.
System	This is the type for System Fields, which are described in the following table.