Posts Categorized: Design

Slowly Changing Fact Tables

Posted by & filed under Design.

Let's assume the organization has a huge number of customers and the task is to track very detailed customer profiles that include customer preferences, market segmentation, customer geography etc. The customer profiles are changing very often. The table would be very wide, huge and growing very fast. We can split the dimension table in a […]

What is Data Vault?

Posted by & filed under Design.

Data Vault model of data warehose proposed by Dan E. Linstedt is an alternative approach to the well known Ralph Kimball's Dimensional Modeling and Bill Inmon's 3NF data warehouse. It has not gained much recognition primarily because the author is not willing to share his ideas for free. You are welcome to support Dan by […]