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Informatica Interview Questions

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How to delete duplicate rows in flat files source is any option in Informatica

Asked By: sravan | Asked On: Jan 25th, 2006

Answered by: Chinna on: May 20th, 2013

Using Sorter Transformation it will delete duplicate records and using Expression Transformation... "c S->SQ->EXP->Router->TR.... Exp Logic=V_Prod_id=Prod_id V_Dup_...

Answered by: Madhuri on: Jun 22nd, 2012

Use sorter transformation after SQ and check the distinct check box of sorter.finally connect to the tgt.

If you want to create indexes after the load process which transformation you choose?A) filter tranformationb) aggregator tranformationc) stored procedure tranformationd) expression tranformation

Asked By: rrvathana | Asked On: Apr 13th, 2006

Answered by: SAMREEN on: May 17th, 2013

Stored Procedure

Answered by: Prasad on: Jul 14th, 2006

Hi,Its usually not done in the mapping(transformation) level. Its done in session level. Create a command task which will execute a shell script (if Unix) or any other scripts which contains the creat...

Informatica transformation

Asked By: KanikaC | Asked On: Apr 29th, 2013

What is the diffference between SQL override and SQL transformation ?

Answered by: Bilal on: May 7th, 2013

There is no different between them. The only thing is, SQL override is executed at the beginning of a mapping and the SQL-Transformation is executed downstream of the mapping

Hii. This question was asked in accenture interviewif ur having source table in which there are records of 10 different countries and ur havig 10 target tables so tell me how should we load the individual...

Asked By: rajnish123 | Asked On: Dec 30th, 2006

Answered by: Mahesh Manam on: May 6th, 2013

Using Router transformation we will achieve this.

S -> SQ -> RTR -> T

In router,create 10 groups for 10 countries

Answered by: Debraj on: Apr 27th, 2013

You need to use TC here, the country names may not be known to you at prior.

How to partition the session?(interview question of cts)

Asked By: vijitha | Asked On: Jan 22nd, 2007

Answered by: dl_mstr on: Feb 10th, 2008

By default when we create the session, workflow creates pass-through partition points at Source Qualifier transformations and target instances.  Partition points mark the thread boundaries in...

Answered by: sreedhark26 on: Mar 12th, 2007

When you create or edit a session, you can change the partitioning information for each pipeline in a mapping. If the mapping contains multiple pipelines, you can specify multiple partitions in some p...

How to only last 100 records from a flatfile?

Asked By: Interview Candidate | Asked On: May 26th, 2012

Thru Informatica how we can load only last 100 records.

Answered by: Saurav on: Apr 3rd, 2013

You can use the following logic

FF-> SRT(in descending order)=>EXP=> FLT=>TGT
||
SEQ

filter the seq generated values from 1-100 this will load the last 100 values to the target

Answered by: shanker on: Mar 29th, 2013

Rank solves the problem based on the attribute you are ranking on. if the attribute is not the distinct, then this would not resolve. I also need right answer for this.

Validate no of rows in source and footer

Asked By: sureshgut | Asked On: Feb 15th, 2013

How do you validate the no of rows received in source with footer(count) and if both count matches then only it should load to target?

Answered by: saurav on: Apr 3rd, 2013

You can utilize the MD5 hash functionality within the mapping

Answered by: Saurabh on: Feb 23rd, 2013

I am assuming the source ia a flat file with no header record but footer record for count. You can have a set of unix command in a unix script and execute the script from pre-session command. Check th...

Update target as a flat file

Asked By: Rajesh.etl09 | Asked On: Oct 11th, 2012

Can you update target as a flat file, without using updated strategy trasformation

Answered by: veena on: Mar 8th, 2013

Yes we can update target without using Update Strategy Transformation in
session->mapping->target->treat source rows as
Update
Update as Update
Update else insert
Update as Insert

Answered by: Rekha on: Nov 20th, 2012

Yes we can update by setting property at session level called treat source rows as UPDATE.

Hw to work with pmcmd on windows platform

Asked By: Ramesh | Asked On: Nov 8th, 2006

Answered by: Joe on: Feb 7th, 2013

ECHO OFF This automates the informatica workflow run using pmcmd ECHO c:informaticaserverinpmcmd startworkflow -u username -p password -s server:host -f Folder -wait MYWORKFLOW

Answered by: dl_mstr on: Feb 10th, 2008

C:-->Program Files-->Informatica PowerCenter 7.1.3-->Server-->bin-->pmcmd.exe

Etl developer daily routine and reporting hierarchy

Asked By: mty49159 | Asked On: Feb 7th, 2013

Can anybody plz explain what would be the daily routine and reporting hierarchy of an etl developer in sales project...

How to explain sales project in interview.

Asked By: kishore sai | Asked On: Aug 3rd, 2012

How to explain sales project in interview.Could u tell me modules or dim table with some column names and facts how to move data from dim to facts.And give me what logic u implement in that projects

Answered by: Lokesh M on: Jan 3rd, 2013

For explaining your sales project: You can follow these points and cover them based on your actual project. 1. Name of the Project 2. Name of the Client 3. Brief Description of the Client 4. Brief ...

Scenario based

Asked By: sohamasmi | Asked On: Oct 12th, 2010

If I have a source as below:employeed, familyid, contribution1,a,100002,a,200003,a,100004,b,205,b,20________________________________and my desired target is as below:employeeid,contribution(in percent)1,25%2,50%3,25%4,50%5,50% ____________________________________________________________________________explanation:...

Answered by: sachin on: Dec 17th, 2012

you need a one source qualifier pipeline to aggregator then ==> a joiner to join aggregator and source qualifier ==> then expression to calculate percentage==> push it to target

Answered by: MAHESH MANAM on: Aug 16th, 2012

Source --> sq --> 2 exps In one expression take a variable port v_port store cum(Contribution) and check the FamilyID to previous ID i_familyID v_family=iff(i_familyID=v_priv_familyID),contribution...

Dimension table vs fact table

Asked By: goutamhere2interact | Asked On: Jun 18th, 2008

What is the main difference in the logic when you create a mapping for a dimension table with that of a fact table in Informatica.

Answered by: Amar on: Nov 30th, 2012

The main logical difference is that we use connected lookup while loading dimensions and unconnected look up while loading facts

Answered by: ASHU on: Jan 21st, 2012

A Dimension table contain descriptive (detailed) data and a fact table contain measurements (facts) which are used to evaluate a business, all numeric are not a facts but the numeric which are key performance indicators is known as facts.. fact table contain summarized data....

ASHU (KARIMNAGAR)

Tell me something about your current project?

Asked By: tiya123 | Asked On: Nov 16th, 2012

Can any one please tell me how to explain manufacturing domain Informatica project in interview as a etl developer and from where to start and end.

Answered by: vijay on: Nov 26th, 2012

Start your project description, then move on to your role and responsibilities and then about your team and so on...

Look up function

Asked By: shojol13 | Asked On: Oct 16th, 2012

What is a look up function? What is default transformation for the look up function?

Answered by: pranusha on: Nov 8th, 2012

The lookup function is used to compare source data with another table based on a certain condition. If the condition is true than the lookup function returns columns that satisfy condition.
The default transformation for lookup function is lookup transformation.

What is the optimum method to load five flat files with same structures into target? What is meant by file repository?

Asked By: venki | Asked On: Dec 18th, 2006

Answered by: Naveen on: Nov 8th, 2012

Set source file type as INDIRECT

Answered by: Amit Gaikwad on: Jul 26th, 2012

Step 1: Transfer all the 5 files on to your UNIX box or server from where you will fetch those 5 files Step 2: open notepad and type the 5 files name .ex:- a.csv ...

How u will create header and footer in target using Informatica?

Asked By: kk | Asked On: Jun 10th, 2006

Answered by: lakshmi on: Nov 7th, 2012

Hi..
As uma told...she is rite,but may i know how to create footer in a flatfile

Answered by: varun joshi on: Aug 7th, 2006

you can always create a header and a trailer in the target file using an aggregator transformation.Take the number of records as count in the aggregator transformation.create three separate files in a...

Difference between stop & abort

Asked By: shojol13 | Asked On: Jul 26th, 2012

What is the difference between stop and abort options in workflow monitor?

Answered by: Sudha Rani on: Nov 6th, 2012

If we have to do stop it will stop that step only.again we have to start the workflow then that time it will start which step u have to stop that step only it start run the workflow then abort says we...

Answered by: Vicky on: Sep 15th, 2012

Stop waits for all running objects to complete and then terminate the process however abort stops the entire object running immediately. Eg: A workflow is in running state and it’s having 5 session...

What r the join types in joiner transformation?

Asked By: Interview Candidate | Asked On: Sep 21st, 2004

Normal (default) master outer detail outer full outer

Answered by: audi on: Oct 8th, 2012

There are 4 Types of Joiner Trasnformations: 1) Normal 2) Master Outer 3) Detail Outer 4) Full Outer Note: A normal or master outer join performs faster than a full outer or detail o...

Answered by: sithusithu on: Jan 19th, 2006

follw thisIn the Mapping Designer, choose Transformation-Create. Select the Joiner transformation. Enter a name, click OK. The naming convention for Joiner transformations is JNR_TransformationName. E...

In SCD type2

Asked By: kalyanraghava | Asked On: Sep 12th, 2012

Is it possible to use SCD type-2 without using lookup in the mapping?If it is possible please let me know. How it will be possible?

Answered by: Anupama on: Oct 8th, 2012

we can use SCD without using lookup.

Answered by: MAHESH MANAM on: Sep 17th, 2012

As of my knowledge we can do SCD Type 2 by using joner transformation. First take the source and target(i.e which is target) as source and join these two by using surrogate key like master outer join(...

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