C# - Save Data As Xml In DB Versus Saving Multiple Rows Of Data?

I am designing my database and wanted to know the best way to handle this problem. I have tabs on a page that looks like this:

Tab1
--SubTab1
----Data1
--SubTab1
--SubTab1
Tab2
--SubTab1
--SubTab1
--SubTab1
Tab3
--SubTab1
--SubTab1
--SubTab1

I can put this information in the database that will be stored in multiple rows like this

TypeID---------------Name
1--------------------Tab
2--------------------Data

ObjectID----------Parent-------------TypeID
1-----------------0------------------1
2-----------------0------------------1
3-----------------0------------------1
4-----------------1------------------1

Or I can just put this in the database like so:

<root>
<tab name="MyTab">
<tab name="MySubTab">
<data>1234567890</data>
</tab>
</tab>
</root>

If I pull just the xml from the database then I would not need to select multiple rows i just need to select one row then parse the xml into a class then pass that data to the controller. I just would like to know if this is a good idea? Will I be making a mistake if my site to scale in the future? Will this make more maintenance as the site gets bigger and want more features?