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Data Warehouse Interview Questions
Questions Answers Views Company eMail

What happen if you have 3 ports in SQ and 4 ports in SQL override of SQ( provided all ports are in same order and they are connected with proper source and target)? Also what happens when I have 4 ports and will extract 3 values in SQloverride.. What will be the value in 4th port ?

CTS,

1175

how lookup transformation is made active in new versions... When to use connected and when to use unconnected lookup and why? which is good for session performance. How to make lookup persistent and how to remove stale data from that lookup. how commit works - when we stop or abort data. Explain in both cases. What is factless fact table and have you ever used it in real time scenarios.

CTS,

1241

I have 10 columns in a flat file and 10 rows corresponding to that columns. I want column number 5 and 6 for last five records. In unix as well as informtica.

CTS,

1192

What if i will group by with some port in aggregator and will not pass the sorted values. Will the session fails tell in both cases ( if i have configured it for sorted input and if i have not configured it for sorted input).

CTS,

1 1565

How to write a expression to display the first letter in Caps in each word using transformer stage ? Please let me know ASAP Thanks in advance...

Alpharithm Technologies,

1074

How to load specific no.of records using bteq, or fastload,or multiload

Infosys,

1308

What is the difference between a utility and api in a RUN SQL component

Accenture,

1 6800

What is use Array size in datastage

 1294

can i any one explain me realtime healthcare project explanation..for interview .iam new to informatica .thanks in advance.

 3311

Hi, Please tell me how to solve this scenario in datastage ? Here we have 3 columns in a table TEST CODE,ENTRY DATE and BATCH The table looks like CODE ENTRYDATE BATCH 100 100716 1 100 100716 1 100 100716 1 200 122517 2 200 122517 2 302 555555 8 302 555555 8 302 555555 8 We need to create a seqno on grouping these 3 columns. The result should be like this. CODE ENTRYDATE BATCH SEQNO 100 100716 1 1 100 100716 1 2 100 100716 1 3 200 122517 2 1 200 122517 2 2 302 555555 8 1 302 555555 8 2 302 555555 8 3

Alpharithm Technologies,

1 2577

Workflow is long running due to long running sql query so when we refer the query plan it tells the issue is due to partition of the db table. How to handle this?

 1224

If the job aborted in a sequencer, how can we start that from the previews successful job.

SLK Software,

1 2648

What is the size of database for you project?

Accenture,

1102

we have a list of 80,000 records, i would like to display in excel sheet but excel sheet has capacity of 60000 record.. how you going to display?

Accenture,

2 1918

New coloums are added in database, then how you know in report level

Accenture,

1148

Un-Answered Questions { Data Warehouse }

Describe a time when you were really stuck on a problem and how you solved it?

2077

What is the difference between static and dynamic conditions?

591

What are attribute roles?

544

What is depict expression change?

603

difference between informatica 8.1.1 and 8.6

3232




What are the five ways to do a table lookup in sas? : sas-grid-administration

581

Can u access a repository created in previous version of Informatica?

1461

What is the difference between the public object&schema object?

562

What is Star Schema?

635

Explain etl mapping sheets?

651

What are data validation strategies for data mart validation after loading process?

526

what will be the contents for a functional requirements specifications

1774

name the components of report studio?

5

Difference between star and snowflake schemas?

596

How do you convert basic cube to transaction cube and transaction cube to basic cube?

1761

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