if we increase the number of dimensions will the rows in
fact table increase or decrease??
Answers were Sorted based on User's Feedback
Answer / pratap gangula
The number of rows in a fact table depends upon the grain of the fact. Dimensions can only describe the data in the fact table. Adding more dimensions will not increase the number of rows unless it impacts the grain of the fact. e.g You have fact at the granularity of day and u want to now add time intervals dimension.... this will increase the number of rows in fact.
Is This Answer Correct ? | 19 Yes | 1 No |
Answer / asha
Number of rows wouldn't increase. Number of cloumns will
increase in fact table as we will have to store the keys of
those dimensions.
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / itesh
Yes, if we increase the dimension obviously that key need
to added in the fact ,
Ex
1 fact joined 1 dim of 4 key,
I have added 1 dim with 2 keys
Now my fact will be 8 keys.
Is This Answer Correct ? | 1 Yes | 6 No |
What is dimensional modelling?
explain about balanced dimension,
what are the types of dimension tables
What is the difference between a W/H and an OLTP application?
Hi, i want to do certification in datawarehouse?? which certification is best in current trend?? pls mention the cost also if u can....
4.Explain Snowflkeschema ?
6 Answers EDS, HCL, IBM, iFlex, TCS,
What is the definition of cube in datawarehousing?
What are the difference between snow flake and star schema?
What is loop in data warehousing?
what type of raid setup would you put your tx logs?
What are the differences between star and snowflake schema?
What is a linked cube?