Configuring Siebel eBusiness Applications > Configuring Multi-Value Group and Association Applets > Understanding How MVGs are Implemented >

About the Link Object

The Link object definition specifies the master-detail relationship between the originating and multi-value group business components. This makes possible the Link object definition from which the fields in the originating business component obtain their values. The Link object type has the following important properties:

• Parent business component. Identifies the originating business component.
• Child business component. Identifies the multi-value group business component.
• Source Field. Identifies the field in the originating business component that serves as a unique ID to that business component. If this property is blank, it indicates that the field that maps to the ROW_ID column, generally called Id, is the source field.
• Destination Field. Identifies the field in the multi-value group business component that identifies the master record for each detail record. It is a foreign key that points back to the originating business component.

  NOTE:  In a link based on an intersection table (the relationship between the originating and MVG business component is many-to-many—that is, one in which the Inter Table, Inter Parent Column and Inter Child Column properties are nonblank), you do not specify the Source Field or Destination Field properties. You can specify a source field (although it is not common to do so). Destination field always defaults to Id.

For more information about links, see About Links.