Solved

date warehouse date dimension design

Posted on 2016-08-09
6
71 Views
Last Modified: 2016-08-17
I'm trying to figure out this design.


I have a count measure "Count(ids)" in my fact table.  I also have the standard date dimension which is joins up to fine.  I'm trying to figure out where to put my YTD Dimension or if it goes into the standard date dimension.  The measure is the count(ids) from the beginning of the year to the most current Saturday.  Do I put the ytd field in the date dimension or should I make it it's own dimension.
0
Comment
Question by:elucero
  • 3
  • 3
6 Comments
 
LVL 45

Accepted Solution

by:
Kdo earned 500 total points
ID: 41749667
Hi Elucero,

Aggregate functions (count, sum, average, etc.) do not normally go in the fact table.  The are computed from the fact table and limited by the dimension (date) table.

You might have other tables that contain summary values, but that's different from the fact table.
1
 

Author Comment

by:elucero
ID: 41749736
Thank you.  I'm sure I'm not explaining this correctly.
0
 
LVL 45

Expert Comment

by:Kdo
ID: 41749737
Can you give me some more detail?
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 

Author Comment

by:elucero
ID: 41760042
I ended up making a ytd dimension and not putting those particulars dates in the regular date dimension.  Thanks for your help.
0
 
LVL 45

Expert Comment

by:Kdo
ID: 41760077
That's not a bad idea.  I assume that you just reused the value of the data dimension key in the fact table?
1
 

Author Comment

by:elucero
ID: 41760084
Yes, thanks.  I just asked another question bout date of death can you help w/that.
0

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Read about achieving the basic levels of HRIS security in the workplace.
These days, all we hear about hacktivists took down so and so websites and retrieved thousands of user’s data. One of the techniques to get unauthorized access to database is by performing SQL injection. This article is quite lengthy which gives bas…
Using examples as well as descriptions, and references to Books Online, show the documentation available for date manipulation functions and by using a select few of these functions, show how date based data can be manipulated with these functions.
Viewers will learn how to use the SELECT statement in SQL and will be exposed to the many uses the SELECT statement has.

785 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question