kskistad at 22h14
16
Jul
2009
Accumulating snapshot with SCD?
Is it common to update dimension keys within an accumulating snapshot fact table if it contains some slowly changing dimensions? Or is good practice to leave the keys alone and only use a more current key for new rows?
My inclination is to leave the keys alone to preserve history of that row, but what if the facts (measures) actually changed too? For example you have an accum. snapshot of loans, and you have a "Current balance"
Is it common to update dimension keys within an accumulating snapshot fact table if it contains some slowly changing dimensions? Or is good practice to leave the keys alone and only use a more current key for new rows?
My inclination is to leave the keys alone to preserve history of that row, but what if the facts (measures) actually changed too? For example you have an accum. snapshot of loans, and you have a "Current balance"
About
This topic belongs to the forum
Data Warehousing and Business Intelligence based on dimensional modeling and the Kimball Lifecycle.
- Numbers of topics : 1858
- Numbers of messages : 8714
- Numbers of users : 3801
- Numbers of points : 1672
Similar topics
Hi,
I'm working for a large Internet Service Provider (ISP) and have a DW modelling challenge which I hope people can help me out with.
Their nature of business includes as a fact recording as an accumulating daily snapshot real time partition basic
I have a business process that has 6 distinct steps from start to conclusion for each instance of the process, we'll call it a case. Each case has two employees assigned to it, 1 owner and 1 co-owner. The owner and co-owner each have different
I'm creating a model of our help desk ticket tracking system, and I'm not sure how to model this. We need to do a snapshot of the data because the transactional system will make overwriting updates. It's accumulating because the ticket has a lifecycle
What are the best practices for maintaining periodic snapshot fact tables if the atomic data that created them is modified? We have a couple periodic snapshot tables that capture new inventory and new revenue at the end of every month. Sometimes the
I have a question about accumulating snapshots and I was hoping someone could shed some light on the subject.
Does Kimball give any guidance anywhere (books, online, etc.) as to whether one should build the supporting transactional fact tables that
Forums from same category
Techy Boards, a growing technology discussion forum! For fans of nintendo, xbox, playstation or anything else!
Free forum : hi. Free forum : 2709rsgamboa6219. Free forum,
LEGO Island Discussion, modding, news and more!
Free forum : Forum IT Teknik Komputer dan Jaringan SMKN 1 SLAWI
HmongThoobNtiajTeb. com/
Search
Informations
1 Replies For the topic :
"Accumulating snapshot with SCD?"
This topic has been viewed 1471 times.
Last message :
16/07/2009 at 22h14 by "kskistad"






