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Creating a Link Between Houses and Appraisals

The relationship between Houses and Appraisals is one-to-many—for each house record, there can be many Appraisal records. The link object establishes the one-to-many relationship between the parent business component (Internal Products) and the child business component (Appraisals). You must create a Link object to establish this relationship. When the relationship exists, you can create a master-detail view to display the data.

Before you can create the link, you must expose the Row_Id field in the Internal Products business component. This field is necessary to link with the Par Row Id field in the Appraisals business component.

To expose the Row_Id field in the Internal Product business component

1. In the Object Explorer, expand the Business Component object type.

   The Business Component window appears in the Object List Editor.

2. In the Business Component window, select the Internal Product business component.
3. In the Object Explorer, select the Field object type (child of Business Component).
4. In the Fields window, right-click and choose New Record.
5. Set the Name property to Row_Id and in the Column property select ROW_ID.

To create a link between Internal Product and Appraisals

1. In the Object Explorer, select Link.
2. In the Links list applet, right-click and choose New Record.
3. Enter values for the properties as shown in the following table.

   Field	Example Value	Comment
   Name	Internal Product/Appraisals	The convention is to use the name of the parent and child business component in the name of the link.
   Project	NREC Configuration	Name of the project.
   Parent Business Component	Internal Product	Name of the parent business component.
   Child Business Component	Appraisals	Name of the child business component.
   Source Field	Row_Id	Primary key value in the parent table.
   Destination Field	Par Row ID	Foreign key value in the child table.