What snowflake and Starschema?

Answers were Sorted based on User's Feedback



What snowflake and Starschema? ..

Answer / bhaskar.nagi

Star Schema: Star Schema contains Centrally located Fact
table sourended by Dimension Tables. So Data Base design
looks like a Start. Fact table contains the fact information
at the lowest level granularity. Fact table contains Foreign
keys and Dimension Table contains Primary key.

Snow Flake Schema: In a star schema, if a dimension table is
spleted into one or more dimension results in normalization
of dimensions. Since the database design looks like snow
flake structure.

Is This Answer Correct ?    7 Yes 0 No

What snowflake and Starschema? ..

Answer / srini madhala

Star Schema:In Star shema we have fact table sorrounded by
diemension table.Since the shape looks as a star its called
as star schema

Snow Flake Schema:

in Snow flake schema we have fact table sorrounded by
diemension table and the diemensional table have their child
diemensions.Its denormalized

Is This Answer Correct ?    3 Yes 2 No

Post New Answer

More Cognos Interview Questions

I have 3 dataitems in a list username,transaction type,transaction amount. In transaction type i have 3 types 'add','update','delete', i have almost 750 rows. After displaying the list report i want to know no. of add's,update's,delete's in 3 different rows

2 Answers  


My report output is showing data as 1 11 111 2 22 222 3 33 333 How can I sort this to 1 2 3 11 22 33 111 222 333

1 Answers  


In Drill through, Reports are executing successfully when rename & run the created reports? Pls tel me the reason?

2 Answers   IBM,


what is the difference between application based and web based in cognos?can you please give a example from out of EP 7 series and 8 series?genrel exampel please?

2 Answers   HCL,


what is an sid (surrogate key)?

2 Answers   IBM, Oracle,






i want to create a crosstab report where product will be on rows year on column and revenue on measure. based on the users selection in value prompt, if user select the August 15, crosstab year column should display values for aug 15, aug 14, aug 13 and aug 12 i.e for last for years but same month. how could we achieve this?

1 Answers   JPMorgan Chase,


-------------------What is Deployment?

2 Answers   IBM,


hi all i am searching for cognos jobs pls inform about the jobs to:santosh.koora@gmail.com

0 Answers  


What is parameter maps & Session parameter?

4 Answers  


wat is bus schema?

2 Answers  


difference between stored procedure and function?

4 Answers   Syntel,


What is catalog and types of catalogs in cagonos and which is better?

0 Answers  


Categories