Interested to Buy Any Domain ? << Click Here >> for more details...
When we enable pushdown optimization technique, two options
will be enabled (use view,..). Can anyone tell me how these
two options will work ?
When do we need to go for pushdown optimization technique ?
- 3 Answers
- 17469 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / parikhita prusty
MY dear friend when we used pushdown optimization it
increases the session performanse.
The integration service analyses mapping transformations and
determine which t?r logic to be sent to the target and
source database.
The integration servicetranslates the T/r logic into sql and
sends it into the database for processing.
The pushdown optimization is configured in 3 ways
i) Source side PDO
ii)Target side PDO
iii)Full side PDO(Both source and target side)
If anybody have some doubts u can ask in my mail id
parikhita2000@gmail.com
Regards
Parikhita
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / priyank
Hi,
For Pushdown optimization, we use
1. Temporary View for the below scenarios:
a. When the SQ or look up t/f contain a SQL override.
b. When the look up t/f is used with Filter t/f.
c. When an unconnected look up is used.
2. Temporary Sequence is used for the below scenario:
a. When a Sequence generator t.f is used in the mapping.
When Source side PDO is selected, the IS traverses from
Source side to the Target side till it comes across a
transformation whose logic cannot be pushed to the
database. If the logic for all the transformations can be
pushed to the database, still the target update override
query will be executed on the target database as logic of
transformations are pushed to the database whcih includes
the SQ query.
As per me, the push down optimizations are mainly used for
performance enhancement of the workflows as there are some
logics which can be exected faster on the database compared
to Informatica.
Please let me know all your comments if any on the above.
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / manojkumar
Thanks you so much parikhita.
Can you give me the exact two options(use view,..) which
will enabled when we select pod and how these options will
work?
When I select pod on source side, what about target insert
or update query ? will it be pushed to target db? Or only
select query will be pushed to source db ?
and when do we need to go for pushdown optimization
technique ? ofcourse it increses the performance. But at
what situation or circumstances we need to go for pod ?
| Is This Answer Correct ? | 0 Yes | 0 No |
I am using mapping variable, when i am running a session,before it has 10000 records, after completion of session what about value of mapping variable?
What is aggregator transformation in informatica?
What is difference between stored procedure transformation and external procedure transformation?
permutations of mapplet
what is the necessity to use update strategy?(except for updates)
Tell me about MD5 functions in informatica
HOW TO DELETE A RECORD FROM FLAT FILE
i have a source table ID NAME SAL 101 A 1000 102 B 2000 103 C 1500 target load should be ID NAME SAL 101 A 1000 101 B 2000 101 C 1500 102 A 1000 102 B 2000 102 C 1500 103 A 1000 103 B 2000 103 C 1500
How to load the data into target table, which not have Primary/Surrogate key (Duplicate records not acceptable)
I have been working in Informix-4gl for the past 2 years in an MNC company.But I'm interested to work in Business Intelligence tools. Is it possible to change the technology now? I'm really confused, please help me
can we see default group,when we use router?if yes how?
How can you define user defied event?
Teradata 
