>>>>All comments highly appreciated.
>>>>
>>>>Alex
>>>
>>>3 and 4 is a typical EAV design. This design has known problems (hard to work with), but in some cases it's used. I suggest to do some reading on EAV model before starting this adventure.
>>
>>That is a wonderful lead, Naomi. Thank you.
>>
>>Alex
>
>You're welcome. I've seen many threads in Database Design forum in MSDN discussing this topic.

Gave you three stars. Thank you.

Alex