fact table as a dimension? Is that bad?

fact table as a dimension

Hi I'm presently modeling a data mart and I would like to use a fact table as a dimension for another fact table. Is it something doable and efficient or is there a better way to do that? if yes should i just create a surrogate key and link both

Fact Table Indexing Strategy

Please explain the indexing strategy which is in use in your organisation for fact tables in your current database(oracle, sybase, db2) Specify volume as the indexing strategy may be based upon the volume of data. Is there a well laid out strategy

NULL Values in Fact Table

In an Accumulating Snapshot that has multiple dates, where we are revisiting the fact rows as additional events occur, should the foreign keys to the date dimension for dates that have not yet occurred be set to NULL or should they point to a

Large Dimension table compared to fact table?

I may be misguided in my attempt to make a dimensional model here, but I will explain the scenario. We provide a value add service in the supply chain business...in this case by depicting a scorecard of the accuracy of vendors' product sizing

Fact table with non-numeric measure

I have a transactional fact table containing results of inspections. The results are non-numeric, but do represent a measurement, that is inspection result (like "pass", "fail", "pass with infraction", "failure with

Transactional detail fact table w/complimentary snapshot table. How do the two play together?

Take a detail daily banking transaction table with standard credit and debit level transactions. I want to build the accompanying snapshot that would present the higher level rollups of these lower transactions: There are about 250 daily transaction

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

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

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

Montly Snapshot views with transactional Fact table w/SCD2

I am a new at working with Dimensional Database design. I am struggling with something that probley is real easy to do, but just can't find documentation that will explain it. I want to create a monthly snapshot view of my transactional Fact table with

Dimension with two hierarchies

I need to design a dimension with two hierarchies 1. Location -> Building -> Room -> Cabin 2. Location ->Building I need the hierarchy 1 to be referenced in one FACT table and hierarchy 2 in other FACT. But my ETL tool allows only the dimension ke

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

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