Degenerate dimension & accumulating fact

use of degenerate dimension to physically join two logically related fact tables

I am looking for a sanity check on a design decision. Here is the scenario: The business domain is insurance, specifically life and annuity. I have two fact tables - factPolicyTransaction and factCommissionTransaction. Policy transactions,

Accumulating Snapshot that acts like a SCD

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

two facts that relate via degenerate dimension

Hi, I have a order line fact which look like this: Order Line Fact ------------- Order Line Key (SK) Order Line number (DD) Order Number (DD) Some measure (fact) Now some time later I have another fact which would reference the Order Number

many to many relationship between dimension level

I need help to design dimension model. Detail of Dimension are as following: Dimension : Student, School Fact : Grade 1. Class_Year 2. School 3. Area 4. City Analysis Requirement are to drill up /down by above given hierarchy there is : M:1

Conformed Dimension for Transaction Fact and Accumulating Snapshot Fact Table

I'm working on a new warehouse application for reporting against our IT Project database. I want to create both a transaction fact table and an accumulating snapshot fact table. The project database (source) consists of multiple normalized tables to

Sparse dimensions, how to handle?

I've purchased the book "The Microsoft Data Warehouse Toolkit" and have reviewed it in order to build out a data warehouse solution I am currently designing. I am stuck in a spot that I don't seem to find any examples of , or am not abl

Questionnaire for medical record entries

Good afternoon, I am currently working on a data warehouse in the health care sector and I currently facing this problem: The aim of this warehouse is to have an overview of a cancer therapy. So, I have created the following fact table

Audit Dimension Help

Hello all. I'm at the stage now where im building the audit dimension for my warehouse. I am having a little trouble figuring out a few things though. How do you aggregate the data from the error event fact table into the audit dimension? Some records

Fact table with multiple date ?

Hi, I am modling a fact table for prisoners inscription in order to track historical changes. An admission is the hole stay comprise of one or many inscriptions usually separated by transferts between institutions. In the transactionnal system, it

Dimensional Model Vs Views as Structure for BOBJ Universe

I have a fairly complex data mart (multiple fact tables: 5 at the moment and several more coming; 4 shared dimensions across the 5 facts, 26 total dimensions and several bridge tables). I used standard best practices for building the Business Objects

Bridge tables versus massive junk dimensions

I am designing a star schema to store information on hospital stays. This is my first real star schema and things are off to a good start. My fact table is hospital stays. I have a diagnosis dimension. There are multiple diagnoses per stay. Costs are

Volume and Weight in Same Fact Table

Is it appropriate to include two facts that are not of the same type? In my example, I may need to have both Volume (Gallons) and Weight (Pounds) in the same fact table. I am building a DW around products that we recycle, these products can be Oil or

MDX(or something else) for getting history based on last dimension characteristic for SCD.

Hi everyone, I am implementing a cube and I run into a problem with slowly changing dimensions(SCD type 2). I guess it might be resolved somehow with MDX or somehow else, maybe you guys can help me to resolve it. The problem: I have SCD, say Policy wit