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MS SQL data warehouse questions

I am working on a data warehouse project by using MS SQL 2008 and MS SSIS and MS ETL

I have the following tool
MS SQL management studio
MS SQL BI Dishevelment Studio
MS Visual Studio

I have an oracle server stored many normalized tables.  Now I want to use these tables into data warehouse and create a dimensional model.

My questions.

1. I want to know if there is a tool for MS SQL server to automatically help table conversion from normalized tables into dimensional tables? Do we have an easy way to do that?

2. How to create dimensional tables and fact tables in MS SQL server from normalized tables stored in other data sources?

0
wasabi3689
Asked:
wasabi3689
1 Solution
 
AmmarRCommented:
Dear wasabi3689

converting from normalized to denormalized for analysis purposes doesnt require a tool, it depends alot on your business needs and what you want to analyse

usually when converting from normalized  to denormalized

your Lookup tables get converted into dimensions and your main table holding transactions will be the fact table.

there are usually 2 types of fact tables

1. transactional
2. snapshot

Lets say you have a database of customers

table 1 (customer details)
table 2 (country lookup)
table 3 (Age lookup)
table 4 (Orders)

You can convert your orders table into a fact table

and you can have 2 dimensions country and age + time
and this way you can analysis your data from Age perspective or country perspective

i mean you can see your orders grouped by country or by age or both depending on how many dimensions you have or need.

for Time dimension its different you need to create your own, you wont a lookup for it.

what i mentioned is very basic and simple

you can dig for more about denormazation and multdimentional modelling

check out these

http://www.ijcns.com/pdf/16.pdf

you also have kimball group, they provide great courses on Datawarehouse and multdimentional modelling
 http://www.kimballgroup.com/html/kimballu.html

after you get the concept you can use Microsoft Analysis services to hold your cube and Pivot table to view your data in a denormalized multidimensional way..
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