fact-less fact table

hai
can you get give me some ideas for constructing a fact table for dataware
housing.And also about the different types of measures in the fact table
like full additive measures,semi-additive measures and fact-less fact table
vidhyaYour fact table should have measures that you would like to report and
analyze. If you wanted to track sales you might have (simplified):
CustomerID
ProductID
StoreID
SalesAmount
Sales Amount is your measure and it can be totaled up so therefore it is
additive.
Semi-Additive measure can be values such as account balances or inventories
(something that is tracked over time). If you have $100 in your account toda
y
and $50 in your account tomorrow, you don't want to state that the total is
$150.
Here is some info on Semi-Additive (it was written under AS 2000 but the
principles still apply):
http://msdn.microsoft.com/library/d...br />
add2.asp
Fact-less Facts are basically used to identify the occurance of something
that may not have a measure associated. Essentially the existence of the fac
t
row counts as 1.
Here is a good Kimball reference for that:
http://www.dbmsmag.com/9609d05.html
-=Steve
"vidhya" wrote:

> hai
> can you get give me some ideas for constructing a fact table for datawar
e
> housing.And also about the different types of measures in the fact table
> like full additive measures,semi-additive measures and fact-less fact tabl
e
>
> vidhya
>
>