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Hi,
If any hav Informatica n DWH FAQ's,Plz do fwd to
vanibv6@gmail.com
Thnx
Vani
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Answer Posted By |
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Question Submitted By :: Guest |
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| Answer | For more Informatica Interview Questions Click Here  |
| Earfgwerf |
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| Question |
sir presently i am persuing my m.tech
recently i got job in tcs as fresher presently iam doing my
9 months project related to informatica can any one guide
me how to create fact tables what type of schemas must be
used and so on if so give ur mail ids so that i can contct
through it |
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Question Submitted By :: Mahesh |
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| Answer | Fact tables will created by
(DBA people or senior architects) with PK-FK relation.
Mstly people will create PK-FK relation in facts After
loading the Data in Table).
Schemas : Mostly STAR Schema.
It will be useful for u ,,,,,,,,,,,
srinu.srinuvas@gmail.com  |
| Srinu |
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| Question |
suppose if we have dublicate records in a table temp n now
i want to pass unique values to t1 n dublicat values to t2
in single mapping using aggregator & router? how |
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Question Submitted By :: Guru |
| This Interview Question Asked @ TCS |
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| Answer | I have a idea after sql transformation go thruogh 2 Agg
Trans,2 Router Trans
Agg1-gorup by col count=1 to router trans
Agg2-group by col count<>1 to router trans
I am not confident check itonce let me know,,
Thanks
Srinu  |
| Srinu |
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| Question |
Which is costliest transformation? costly means occupying
more memory? |
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Question Submitted By :: Guest |
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| Answer | Look up Transformatoin only,
its going to maintain existing data also in cach memory  |
| Srinu |
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| Question |
how to run two workflow(not a sessions) sequentially, what
is the process. Plz explain detailed information. |
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Question Submitted By :: Brahma011 |
| This Interview Question Asked @ Keane-India-Ltd |
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| Answer | I would use following methods
1. Create a KSH to call (pmcmd startworkflow) two workflows
one after another (or two statements in ksh). And if
required, I can check successful run of previous workflow
before running another.
2. Make use of command object in second workflow. This
object will be based on ksh which can wait on file created
by successful run of first workflow
3. Make use of even wait task as file watcher and watch a
file created by first workflow.
4. Crude way: Determine workflow execution time. Schedule
two workflows by considering execution time difference.  |
| JayeshMumbai |
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| Answer | as per i know
create a worklet and save the workflow in worklet and run
please let me know is this ans is correct
please call me if this is not an correct 9912063678  |
| Ganesh |
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| Answer | The best way is obviously to run WF1 and then call WF2
using PMCMD command in the last session of WF1(as a post
session task).If you absolutely want to ensure that the
second wf starts only after graceful completion of wf1 then
simply add a command task for the pmcmd and use the piple
to validate that the previous task is completed properly.
Please let me know if you are not clear or need more info.
Cheers!  |
| Subash |
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| Question |
how to run 2 workflows sequentially. plz respond what is the
process? |
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Answer Posted By |
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Question Submitted By :: Brahma011 |
| This Interview Question Asked @ Cap-Gemini |
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| Answer | We can do using Event Raise & Event Wait tasks in workflows  |
| Vijay Reddy |
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| Answer | we have to create worklet . a worklet can be used to run
multiple workflows. a worklet is created with worklet
desinger tool.  |
| Ganesh Prasad |
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| Question |
what is the monster dimension plz give me one example |
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Question Submitted By :: Brahmaiah |
| This Interview Question Asked @ EDS |
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| Answer | Monster dimensions require special handling and advanced
planning, especially when you’re dealing with rapidly
changing monster dimensions. Rapidly changing dimensions
(i.e., dimensions whose content changes as a result of
input errors or changes over time that you’re recording in
place) aren’t too much of a challenge when the dimensions
are small. However, monster dimensions consume large
amounts of maintenance time and CPU cycles because of their
size, so you need to plan carefully when you’re dealing
with them. Let’s explore two different methods for managing
rapidly changing monster dimensions: first, splitting the
dimension, and second, creating a set of non-overlapping
value ranges for each rapidly changing attribute and then
creating rows that include all possible range combinations.  |
| Pooja |
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| Question |
which one is costliest transformation? costliest means
occupying more memory. which one
Aggregator,sorter,filter,etc.. |
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Answer Posted By |
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Question Submitted By :: Raja |
| This Interview Question Asked @ TCS |
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| Answer | HERE YOU MENTIONED ONLY 3 TRANSFORMATION, SO OUT THESE 3
aGGREGATOR IS COSTLIEST TRANS  |
| Pooja |
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| Answer | hi guys,
some one selected that Above ans is worng.. can any one
tell correct answer.for the above Question  |
| Savita |
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| Answer | hey raj, pooja and savita the costliest transformatin till
Infa7.1.4 is lookup but after Infa 8.1 it guess it sj=hould
be JAVA.  |
| Krishna |
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| Question |
Which gives the more performance when compare to fixed
width and delimited file ? and why? |
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Answer Posted By |
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Question Submitted By :: Guest |
| This Interview Question Asked @ HP |
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| Answer | fixed width,because there are no delimiters to check so the
preformance will increase  |
| Murthy |
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| Question |
What are the challenges of Dataware housing in the future? |
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Answer Posted By |
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Question Submitted By :: Krishna |
| This Interview Question Asked @ HP |
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I also faced this Question!! |
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| Answer | Doveloping Programing tools also  |
| Srinu |
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| Question |
why we use source qualifier transformation? |
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Answer Posted By |
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Question Submitted By :: Raaja |
| This Interview Question Asked @ Accenture |
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| Answer | source qualifier transformation represent the records that
the informatica server reads when it runs a session.  |
| Manoj |
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| Answer | Source qualifier is the first transformation which reads
data from relation of FF source.
With SQ we can limit the source data or sort or aggregate
or remove the dupliate data via SQL Query.  |
| Ankit |
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| Answer | hi,
we use SQ trans as 1st trans due to its properties. in SQ
trans i means at the begin of extracting of data its self
we can remove duplicate ,we can filter,join,override the
query,pre and post sql querey.... in orther words we use it
to impore the performance.  |
| Pooja Amhed |
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| Answer | Source Qualifier Transformation basically converts
different data types to Informatica Compatible Data types.
The additional Feature of it to allow the developer to
override the SQL (Only while reading database sources) adds
better design in the map. [instead of having additional
Filters and Sorters].  |
| Vanitha |
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