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Categories >> Software >> Data-Warehouse >> Informatica
 
 


 

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Question
What is the difference between a table and the materialized 
view?
Rank Answer Posted By  
 Question Submitted By :: Dilip
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Answer
1.Refreshing of data is possible in materialised views. we 
can restrict rows of data for acces from other users in 
materialised views.

above mentioned two points are not possible with table.

Thanks
Deepthi
 
0
Deepthi
 
 
Question
How to join a Flat and Relational Source without using (Joiner,
Update and Lookup ) transformations... is it possible? if yes i
would like to know how?
Rank Answer Posted By  
 Question Submitted By :: Ajitforyou
This Interview Question Asked @   Wipro
I also faced this Question!!   © ALL Interview .com
Answer
not possible
 
1
Arjun
 
 
Answer
It is not possible to join a flat file and relational source
without joiner/lookup. Source qualifier is used for
heterogeneous source...means source belongs to same
database...in the ur case flat file and relational source
not belong to same database so...we cant join it into SQ.
 
0
Aakansha
[HP]
 
 
 
Answer
Hi,
 I know this is possible but not sure how.. SQ is used for 
Homogenius sources. Anyone else please try to get a 
positive answer on this one.
 
0
Charan
[HP]
 
 
Question
i have a source which relational.I am trying to populate to 
target flat file with one column for daily date which is 
sysdate.
I want to populate the sysdate coulmn with DD/MM/YYYY 
format.
kindly provide a solution for this..my clear that my target 
is flat file.
Rank Answer Posted By  
 Question Submitted By :: Rakesh
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Answer
In expression transformation create one out put port, and 
write like: TO_DATE('SYSDATE'.'DD/MM/YYYY').
Connect this port to target.
 
0
Prabhas
 
 
Answer
In expression write following if target field is defined
with DATE datatype:
TO_DATE(TO_CHAR(SYSDATE,'DD/MM/YYYY'))

If target field defined with character datatype then use:
TO_CHAR(SYSDATE,'DD/MM/YYYY')
 
0
Aakansha
 
 
Question
If the source has duplicate records as id and name columns, 
values: 1 a, 1 b, 1 c, 2 a, 2 b,the target shd be loaded as 
1 a+b+c or 1 a||b||c, what transformations shd be used for 
this?
Rank Answer Posted By  
 Question Submitted By :: Radhika
This Interview Question Asked @   CTS
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Answer
you can use normalizer or expersion transformation.
 
0
Saritha
 
 
Answer
We need to use sorter,Expression and aggregator transformations to do this

1.Sort by ID
2.Take 2 variable ports one for id and one for name and store the values of id and keep on comparing with current id i.e variable is having previous id.
so,if previous id=current id then (variable name)||name otherwise only name.assign the variable name to output port
3.Use aggregator and use last or max(len(name)) to get the result
 
0
Rajesh.a
 
 
Answer
In source qualifier use this query
select name from table_name group by id
now apply an aggregator transformation to concate the name 
according to the group id.
 
0
Somnath Pain
 
 
Question
how many repositories can v create in informatica .
Rank Answer Posted By  
 Question Submitted By :: Pentaho
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Answer
In Informatica 8.6 and above there can be mulitilple 
repositories can be created under node.

The domain can have multiple nodes
 
0
Manju
 
 
Question
how to convert the .doc docs into .txt format using 
informatica
Rank Answer Posted By  
 Question Submitted By :: Guest
I also faced this Question!!   © ALL Interview .com
Answer
Hi,
What is .doc source ?
can You give some Exaple for .doc source ?
 
0
Vasu
 
 
Question
Router T/R is active but some people are saying it is also 
passive which is exactly right?
Rank Answer Posted By  
 Question Submitted By :: Informaticainterview
I also faced this Question!!   © ALL Interview .com
Answer
Hi Guys,

First of all Every Active tranformation is a Passive 
transformation,But every passive not Active.

In Router Transformation there is a special feature with 
Default Group.Because of Default Group its Passive.
We can avoid this Default group by Some transformation 
Settings,Now its Active.    

any queries let me know
srinu.srinuvas@gmail.com,,,,,
 
0
Srinu
 
 
Answer
Hi,

Router is Active Transformation only.Take a small example.Lets say emp table is having salaries between 1000 and 2000.and no.of records of salary 1000 is 5 and no.of records of salary 2000 is 5 and no.of records of salary 1500 is 5 .
Now in Router we will create 2 groups and and conditions are 1group-salary >=1000 and salary <=1500 --will give 10 rows
2group-salary >=1500 and salary <=2000 --will give 10 rows
so input rows are 15 and output rows are 20.So there is a change in no.of.rows between input and output.So Router is active
 
0
Rajesh.a
[Informatica]
 
 
Answer
AS  srinu said All Active can act as passive. Active TR
means the number of rows which is the input to the
Transformation will decrease in the  output from that
transformation . 


For example :- i have emp table if  i write a condition
where sal>2000 then the  rows will decrease after this
transformation . same when i  didn't apply any condition
then that acts as Passive transformation
 
0
Deva
[Informatica]
 
 
Answer
@Answer2: See, you mean to say input to the router is 15 
and output is 20 so router tr is active. if that is the 
case, we can take one row from the expression and connect 
it to two transformation, so do u say expression is also 
active?
 
0
Manoj
[Informatica]
 
 
Question
HOw can we load the normalised data ( Vertical data) to 
(Horizontal data)with out using decode in the expression 
transformation and the aggregator transformation.  But, 
what exactly I want is .. If we have million of records,it 
is not possible using decode and search for that Particular 
Id to pivot into Horizontal data... Can any one of guys 
please help me in this regard.....
Rank Answer Posted By  
 Question Submitted By :: Harish Kakarlapudi
This Interview Question Asked @   TCS
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Answer
Hi,

Check with Normaliser Transformation
it will help you.


Any queries !! let me know
srinu.srinuvas@gmail.com
 
0
Srinu
 
 
Answer
Hi Srinivas,

It is opp. to Normalisation process, so, i think that it 
cannot be done using Normaliser transformation. Can you 
give me any idea , pls...
 
0
Harish Kakarlapudi
 
 
Question
I want to run a informatica worklow after complition of 
oracle procedure. That procedure is not running through 
informatica and can be run at any time in database. 
Informatica is in windows environment. Is it possible ? If 
yes please explain.
Rank Answer Posted By  
 Question Submitted By :: Sachin Shrivastava
I also faced this Question!!   © ALL Interview .com
Answer
This can  be possible with unix . Create a shell scripts
which  first has to Execute the stored procedure or Package
and we have command to check the completion or procedure
after that  use Pmcmd  command in the same unix to start the
workflow.
 
0
Deva
 
 
Answer
Oracle proc can create a 0 byte file at the end of the proc 
and infa workflow can wait for the file (indicator file) to 
begin the execution.
 
0
Asha
 
 
 
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