Developers delete a relationship when they no longer want to relate columns in two related tables. When they redesign tables, it is often necessary to delete relationships and then recreate them after their new design is complete. When Developers working with SQL Server “Denali”, MS SQL Server 2008 R2 and MS SQL Server 2005 want to delete relationships between, they should follow the next steps:
1. In Object Explorer, right-click the table involved in the relationship, and click Design (Modify in SP1 or earlier).
The table opens in Table Designer.
2. From the Table Designer menu, click Relationships.
3. In the Foreign Key Relationships dialog box, select the relationship in the Selected Relationship list.
4. Click the Delete button.When developers delete a relationship, the relationship is deleted from the database when they save the table.