what is aggregate navigation?
- 3 Answers
- 25397 Views
- Countrywide, CTS, HCL, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Whenever we use Aggregate Aware we need to set up
incompatilibities to work it properly (so BusinessObjects
knows what SQL to generate)
For example, There are 2 aggregate tables fact table by
week and by day.If you set up a measure as aggregate aware
from both tables - total quantity for example, the select
might be something like: -
@Aggregate_Aware(sum(week_agg.qty),sum(day_agg.qty))
The week table listed first as this would be the
preference. But as BusinessObjects needs a reason to not go
to the week_agg table, this is done using
incompatibilities. For example the Week Number dimension
object would be compatible with the week_agg table as it
will link to it and the data is held at an appropriate
level to report against it. However the Date dimension
object would be set as incompatible with the week_agg
table, such that when it is selected alongside the Quantity
object, BusinessObjects knows to jump to the next option in
its select definition.
| Is This Answer Correct ? | 27 Yes | 3 No |
Answer / nareshkumar
Aggregate Navigation is used to specify the incompatible
objects.
| Is This Answer Correct ? | 20 Yes | 7 No |
Answer / sam
To receive the performance benefit offered by an aggregate
schema, a query must be written to use the aggregate.
Rewriting the sample query was a simple matter of
substituting the name of the aggregate fact table for that
of the base fact table. This may be easy for technical
personnel, but can prove confusing for an end user. The
complexity grows as additional aggregate tables are added.
Technical and business users alike may err in assessing
which table will provide the best performance. And, if more
aggregate tables are added or old ones removed, existing
queries must be rewritten.
The key to avoiding these pitfalls lies in implementation
of an aggregate navigator.
A component of the data warehouse infrastructure, the
aggregate navigator assumes the task of rewriting user
queries to utilize aggregate tables.
Users and developers need only be concerned with the base
schema. At runtime, the aggregate navigator redirects the
query to the most efficient aggregate schema.
| Is This Answer Correct ? | 6 Yes | 4 No |
Example of how the fantraps and chasm traps works?
Is it possible to join more than one universe in Business Objects? If its so how is that possible ? thanks in advance for the answers
Explain in detail about type 2(scd),
HOW YOU WORKED WITH MULTIPLE DATA SOURCES?IF YES ?HOW DO YOU LINK THEM?
bo 6.5 is a 3 tier architecture. Tell me the names of the tiers?
what is tuning of business reports ?
5 Answers Business Intelligence Analytics, Oracle, TCS,
what is difference between Rich client web intelligence and Boxir2 web intelligence
How to create Index to the table in the universe designer and how it improves the Query performence
HI i have a table with 4 columns in back end like sales id, sales revenue, order id and order amt. Now i have created 2 prompts at query level 1st on sales id and 2nd on order id. Now if i run the report for 1st prompt it has to display sales id and sales revenue. Then if i run the report for 2nd prompt then it has to overwrite the table with Order ID and order amount. How you will handle this?
Explain the difference between union and group?
How many universes can be created in a project?
how to create reports on screech?
Teradata 
