Data Warehouse Interview Questions
Questions Answers Views Company eMail

I have 1 crore record in my table and I have to load 25 L in 1st target,25L in 2nd target and 25L in 3rd target? I am new to Informatica,can anybody suggest me the idea?

2 3457

How to load query faster,so that It will take less time to load?

BNP Paribas,

1 2969

rank() over (partition by opt2.dim_plat_site_id, opt2.dim_site_opt_sid order by case when opt2.dm_market_flg in ('Y', 'U') then 1 else 2 end, lkp.contact_rank) as rank1, case opt2.contact_type when 'Buyer' then row_number() over (partition by opt2.dim_plat_site_id, opt2.dim_site_opt_sid, lkp.contact_rank order by has_name_flg desc, ship_to_flg desc , last_order_dt desc) when 'Decision Maker' then row_number() over (partition by opt2.dim_plat_site_id, opt2.dim_site_opt_sid, lkp.contact_rank order by has_name_flg desc , last_quote_dt desc , mailability_score desc , source_ranking desc) when 'Influencer' then row_number() over (partition by opt2.dim_plat_site_id, opt2.dim_site_opt_sid, lkp.contact_rank order by has_name_flg desc, mailability_score desc, source_ranking desc) when 'Payer' then row_number() over (partition by opt2.dim_plat_site_id, opt2.dim_site_opt_sid, lkp.contact_rank order by has_name_flg desc, mailability_score desc, source_ranking desc) --elu 05/28/2013 else row_number() over (partition by opt2.dim_plat_site_id, opt2.dim_site_opt_sid, lkp.contact_rank order by has_name_flg desc, mailability_score desc, source_ranking desc) end rank2 row_number() over (partition by opt3.dim_plat_site_id, opt3.dim_site_opt_sid order by rank1,rank2) as "rank", case when "rank"<= opt3.maximum_value then 'Y' else 'N' end as include_flg

1504

Using Informatica Visio to generate mappings. I am getting error "Table Definition Not Found Exception Error" while importing the template.

1 3044

Hi, can anyone plz share the project architecture for etl testing(banking domain) plz explain the architecture .

Cap Gemini,

2539

can u anyone plz share some etl testing interview question . and share the sql queries and unix . plz help me to clear in the etl testing interview by sharing ur knowledge

Cap Gemini,

1283

Hi can anyone write query for the below input and output Table 1 col 1 100 Null 200 300 Table 2 col1 Null 400 700 800 o/p 200 700 800 2)sql col 1 contains 23x-5-45 26x-12-45 28x-10-50 o/p middlevalue should be greater than 10

Cap Gemini,

1128

case and like function in informtica (my source is XML). case when OS Like'%Windows%' and OS Like '%200%' then 'Windows 200' case when OS Like'%Windows%' and OS Like '%200%'and OS like '%64%' then 'windows 200 64 bit' etc.,,

1 1926

3.User1 doveloped some report,user2 modify the same report and user 3 also updates in that same report? how to identify that report will be modified or not?

IBM, Thomson Reuters,

1 2825

how do we write scripts in unix how to execute scripts in real time anybody please needfull or give me number i will cal u

1260

scenario: dept_no emp_nem 10 A, 10 B, 10 C, 10 D, 20 P, 20 Q, 20 R, 20 S output: dept_no emp_nem 10 A, 10 AB, 10 ABC, 10 ABCD, 20 ABCDP, 20 ABCDPQ, 20 ABCDPQR, 20 ABCDPQRS

1 3786

replace multiple spaces with single space.

IBM,

3 5203

How to get rid of non ascii characters in a string? Ex:- United States Microsoft Visual Studio Tools for Applications 2012 x86 主控支援 - 繁體中文語言套件 to United States Microsoft Visual Studio Tools for Applications 2012 x86.

CTS,

1 2899

How to cast date "2015-03-03-012204-000000" to timestamp

Cognizant,

1 3336

Hi,by usining ptf how we have to combine (likr merge)10 datasets at a time in the oracle database(and write a macro code also)?Like this i have a douts a lot if you dont mind may please send one text mail for me(madhusudhanap16@gmail.com)?

1175


Un-Answered Questions { Data Warehouse }

Is it possible to create multiple domains on a single Informatica server?

727


How to process records in batches like 1-20 records in first execution and 21-40 records in second run.. so on

450


what is scheduling and how will u implement it. In scheduling 5 jobs r running if there is an error occured at 3rd job and how will u check and waht necessary steps will u take not to repeat the same mistake

1891


diff b/w dwh & data mart diff b/w star schema & snow flake schema diff b/w fact table & dimension table what are the contents in requirement specification what are the docs needed for testing draw ur proj architecture

2068


1)s.key generate 1 to 700 records today. tomorrow another 400 will updated how to update the records using s.key generator? 2)source is like :-- DB --> T/F stage1 --> seq1file T/f 1 is linking with T/F2 ---> seq 2 how to load the data? in source i given some conditions those r going in seq1. The another data will going to seq2 how to do this ?

1603






What is defined as partial backup?

606


How do you call a module named �testmod.cfm� with the parameters param1=�yes� and param2=5?

561


write a query to display the departments with no employee?

1531


Explain what is the difference between power center & power mart?

503


What is loop in data warehousing?

646


Informatica Server and Client are in different machines. You run a session from the server manager by specifying the source and target databases. It displays an error. You are confident that everything is correct. Then why it is displaying the error?

1479


How can you first report in Business Objects by using broadcast agent?

2574


list and discuss two approaches for updation of target table in Informatica and how they are different.

1717


Describe the elements you would review to ensure multiple scheduled batch jobs do not collide with each other?

594


According to you, what are the most important tables in a dw? Why?

548