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Lesson 11 | Making databases relational
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10. Click the book in the status toolbar to flip through the records until you see the company name
change.
Though the Corporate Account Information layout is based on the Customers table, you can
view address data stored in the Companies table because of the relationship you set up earlier
in this lesson.
Display a list of related records
Relationships are bidirectional. The relationship you made between the Customers and
Companies tables displays data (company addresses) from the Companies table. Next, you will
use the same relationship to display data (customer names) from the Customers table.
Create a portal to display matching records
You can add a portal on a layout to display data from related fields.
1. Choose the Companies layout from the Layout pop-up menu.
A relationship must always be defined before you can display data from related records. Now
you will use the relationship to the Customers table you defined earlier in this lesson, but first
the relationship must be changed to allow the creation of records in a related table.
2. Choose File menu > Manage > Database, and click the Relationships tab, if it isn’t already
selected.
3. In the relationships graph, double-click the relational operator
Relationship dialog box.
to display the Edit
4. At the bottom of the dialog box under Customers, select Allow creation of records in this
table via this relationship. This lets you add a name to the Customer Type List.
Select this
checkbox
5. Click OK, then click OK again to close the Manage Database dialog box.
6. Use the book or slider in the status toolbar to move to the first company record (ABC Company),
if necessary.