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can anyone help me to find out the difference between the STAR SCHEMA and SNOWFLAKE SCHEMA.
star schema snowflake schema which schema usefull Qlikview?why ?
Re: Star schema or snowflake schema or flat file?
Star Schema or Snow Flaxe schema?
anybody knows what schema it is?
Re: Difference between Star Schema & Snow Flake Schema?
which schema is best for data modeling betwen star and snowflake?
Hi,
Have a look at below posts
http://community.qlik.com/message/524541#524541
http://community.qlik.com/message/542932#542932
Regards
ASHFAQ
Marco, it is like you have given a lots of link for the concept..
Well go for the Ralph Kimbel data ware housing concepts.
It is the Black book for all such concepts.
snow flake star
1.Normalize denormalized
2.fact-> dimension-> dimension fact-> dimension (centralized fact)
3.when select to find result when select to find take shortest path( retrival faster)
may take more time( comparatively slow
retrieval)
4. more Ram Consumption comparative less Ram
5. No duplicates duplicated data posiblility as merging tables
6. query response time is more comparitavely less
7. good for transaction dbs Good for BI (where only select impressions)
Please search in Google, you will enough material.
Hope by above answers your query is sorted.
Thanks!