Adding new attributes to a dimension

robhale at 10h48
20
Feb
2009
Adding new attributes to a dimension

We're an Oracle 10g warehouse site and still get nervous when adding new attributes to our ageing dimensions. The issue stems from not being able to reorder columns in Oracle. So your new attributes either sit at the bottom of the table (not good) or you have to do a create table new_dim as select a,b,c,d...n from old_dim and hope you don't miss a column. We wrote a function this week to at least help get all the column id's and avoid that terro
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
My company is currently building a data warehouse and I have a design issue that I am not sure how to address. In general, our business is selling an asset, such as the stock of a corporation, with a certain number of shares and a value. The value of th
I have a business requirement that is somewhat stretching my modelling skills. The application is a highly sensitive one so I’ll describe the problem using a Sales Datamart template. There are 7 plus fact tables, 1 is updated monthly, the rest
Hi Just looking for some confirmation that a dimension with partial attributes might still be considered conformed. For eample A dimension of batch ProdBatch PK BatchID Batch Name Product ID Product Name ... at an invoice Fact table
suppose you have - a discount code attribute - a status attribute which depend on the combination of the dimension customer & the dimension product. You want to be able to relate these attributes to a fact table invoice details. What are the
In the health care data analysis DW, the grain of one of my fact tables is the episode of care. How can I include procedure codes performed on an episode ? if I create a multi-valued dimension for it and used bridge tables to model this, it will end up
Forums from same category
See also
more_less
Informations

7 Replies For the topic :
"Adding new attributes to a dimension"

This topic has been viewed 4607 times.

Last message :
20/02/2009 at 10h48 by "robhale"