As I wrote before:
Use SQL Server Management Studio, create new database view. (use wizard or this query to create new view)
CREATE VIEW [_test]
AS
SELECT Interfaces.NodeID, Interfaces.InterfaceID, Interfaces.Caption AS Interface_Caption, Interfaces.InterfaceType AS Interface_Type
FROM Nodes INNER JOIN
Interfaces ON Nodes.NodeID = Interfaces.NodeID
WHERE (Nodes.IP_Address = '10.27.254.254') AND (Interfaces.InterfaceType = 6)
Right click your view in object tree and select Edit Top 200 Rows.
Now you should be able to edit ingterfaces in the table.
To see different interfaces, delete the view and create new with proper SQL query or edit design of current view.