What are the Advantages of de normalized data?
Answers were Sorted based on User's Feedback
Answer / kris
De Normalised Data:
A table storing denormalised data occupies more space
because lot of duplicate information creeps in when we
denormalise a table.
As less number of join conditions are required to retrieve
data from one/more denormalised tables, the performance
will be fast.
DWH environment prefers denormalised data structures.
Is This Answer Correct ? | 27 Yes | 2 No |
Answer / mahesh
Denormalized data makes data retrieval operation faster and
reliable due to minimum number of joins used for
it.Therefore it improves the performance of the system.
Is This Answer Correct ? | 0 Yes | 1 No |
Answer / eric yang
De-normalized data can save more space and have better
performance when run a sql for it
Is This Answer Correct ? | 0 Yes | 21 No |
Hello , I am unable to work with SQL transformation at least. Where do i need to give connection for sql transformaton ? At session level there is no property . I have created a SQL Transformation and chosen query mode. But do i need to pass connection information to it ? I don't know where do i need to write a query ? I have written a query in file and that file path i gave in the properties of SQL Transformation. But it is not working. Could any one of you please let know how can i work with SQL Transformation? Advance Thanks.
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