As mentioned earlier, you cannot create constraints by using automatically created columns in node and edge tables, and thus it is not possible to create foreign keys between these tables by using these columns. This means that you can delete a node, even if it is referenced in an edge table. For instance, the following code should work: the entry from the dbo.TwitterUser table with the UserId = 5 (@WienerSportklub) should be removed from the table, and two identical SELECT statements should return two different result sets, as shown in the following code:
BEGIN TRAN SELECT t2.UserName FROM dbo.TwitterUser t1, dbo.TwitterUser t2, dbo.Follows WHERE MATCH (t1-(Follows)->t2) AND t1.UserName = '@MilosSQL'; ...
