Interested to Buy Any Domain ? << Click Here >> for more details...
Hi
I have been asked several times the following questions.
1.How does one do incremnental loading
2.Scenario - You are trying to load reasonable amount of
rows into the target table, and its taking a helluva lot of
time.What could be the reasons?
I hate to answer these tw0 , gives me nightmares to even
think of it!!!
3.Tell me any complex situation you have faced( as an
Informatica Developer) and how did you resolve it.
4.tell me any complex mapping that you have done.
All the experienced people out there , please please, reply
to these questions.
- 2 Answers
- 8470 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / chiky
How does one do incremnental loading
CHECK OUT THE OPTION, truncate target table option in
sesson==> target properties.
this makes the incremental load.
Scenario - You are trying to load reasonable amount of
rows into the target table, and its taking a helluva lot of
time.What could be the reasons?
use bulk loading in session properties.
use less record as master table in joiner
use filter in first of the mappings
dont use unwanted columns in source qualifier.. better use
SQL overriding.
use dynamic lookup only if in use.
tune your query what ever reads from db.
use partitioning of table if records are huge in number.
3.Tell me any complex situation you have faced( as an
Informatica Developer) and how did you resolve it.
4.tell me any complex mapping that you have done.
AM not enough experienced to answer this two questions.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / abhinaw prakash
Answer
1.We can do incremental loading by clicking on the check box inside Aggrgator T/R.Use filter transformation before Aggrgator to filter out rows and pass only the changed records to the flow.
2.One of the reasons could be the time its taking to build caches.to answer this more details of the maping is required.
| Is This Answer Correct ? | 0 Yes | 0 No |
Describe the scenarios where we go for joiner transformation instead of source qualifier transformation?
In ur current projectu have done any performance tuning of mappings?
how we load the data from source to staging area
What is data caches/ index caches?
What is substr in informatica?
Explain grouped cross tab?
in which situations do u go for scds ?
What are differences between Informatica 7.1 and 6.1
I have source like col1,col2,col3,col4 and the values are like 3,6,1,7 1,5,3,8 2,1,5,6 i want the output like 3,6,7 5,3,8 2,5,6 How we will achieve in this scenario in informatica level. Please help me.. Thanks in advance..
what are objects in data warehouse?
my source is a comma delimited flatfile as eno, ename, sal 111,sri,ram,kumar,1000 and my target should be eno ename sal 111 sri ram kumar 1000 i.e; we need to eliminate the commas in between the data of a comma delimited file.
Can you generate sequence numbers without using the sequence generator transformation?
Teradata 
