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Data Warehouse Interview Questions
Questions Answers Views Company eMail

indatastage 8.1 surrgoate key generates seqences numbers write but there is limite value i want to reset the seqence after gettting some highest value like i want o/p like this 1 2 3 4 5 .............10000 1 2 3.........10000

TCS,

1 5208

what is alias what is shortcut what ia alias shortcut and diff among them if u know explain clearly

TCS,

2 14706

what is conditional query subject and example

TCS,

2 6297

why we r using report studio in webbased only and fm windows based only

1 4473

i have flat file and using unix how can i generate sequence number into targer?

Cap Gemini,

1 10091

plz tell me some dimentional and fact table names in banking project?

Virtusa,

2 10100

i have one table with one column in this column i have three rows like 1,1,2 then that rows populate to target as first tow rows as one row and remaing row as one row how it posible? COLUMN_NAME SHIVA RAMU MADHU THEN I WANT TO LIKE SHIVA AND RAMU IN ONE ROW AND MADHU IS ONE ROW IF ANY ONE KNOW PLZ TELL ME

Cap Gemini,

3 10092

Hi, I have one flatfile as target in a mapping . When i am trying to load data second time into it. The records already is in flatfile is getting override. I don't want to override existing records. Note : we can do this by implementing CDC / Incremental pool logic if target is relational . But this is flatfile. So, even i use this same technique it will override only So what is the solution ? Is there any option at session level for flatfile target ? Advance Thanks

IBM,

4 10239

Hi, In source I have records like this No name address 10 manoj mum 10 manoj dilhi 20 kumar usa 20 kumar Tokyo I want records in target like shown below No name addr1 addr2 10 manoj mum dilhi 20 kumar usa Tokyo If it is reverse we can do this by using Normalizer transformation by setting occurance as 2. Somebody will say use denoralization technique. But as of my knowledge I couldn’t find any denormalization technique. Is there any concept like that? I tryid this seriously but I could find any idea to implement this. Can any one please help me ? Advance Thanks

IBM,

6 8154

Hi, I saw one mapping implemented by my seniors . In Expression transformation they implemented following logic. That is iif(is_date(in_UC_DATINV,'YYYYMMDD'),to_date(in_UC_DATINV,'Y YYYMMDD'),'Inventory Date is either invalid or null') Inventory_Date is validated only for is_date() But not validated for notisnull() . But error says “ either invalid or null “ why? Whether is_date() also check for not isnull() ? or in this logic something is different ? Please answer me . Advance thanks

IBM,

1877

Hi, What is exactly node ? what is exactly domain ? How loadbalancer will work ? what is Integration service (IS) ? Can anyone give me exact scenario when I click on start workflow in the workflow manager ? (Note : I am not expecting answer like, node means logical representation of a machine and domain will contain multiple nodes .I gone through Informatica help but I couldn’t understand. I am expecting exactly what is happening in background detailed explanation or Pictorial representation will be highly appreciation ) Advance thanks

IBM,

3 5826

Hi, Can anyone just give me the list of all versions of Informatica ? Advance Thanks

IBM,

2 9388

Hi, In Router transformation I created two groups . One is Passthrough=> True Second one is CorrectId’s => Invest>50000 Here I have one doubt. Can’t I treat default group as Passthrough group (fist group) . Is there any difference between default group and Passthrough group in this scenario? Let me know if you want more information about this scenario. Advance thanks.

IBM,

3 9884

Hi, In a mapping I have 3 targets and one fixed width file as source. Total 193 records are there . I connected one port in aggregator to all 3 targets. The same value need to be load into these 3 targets . It is loaded like that only but in different order. Why? The order of insertion should be same know for all 3 targets ? Then why the order is changed ? Any one please help me. Advance thanks.

IBM,

3 6940

Hi, What is version control in Informatia ? Can anyone just give an idea or introduction about this? Advance Thanks

IBM,

2 6509


Un-Answered Questions { Data Warehouse }

What are the business intelligent tools to which Redshift can be integrated with?

5


How to partition the Session?

1127


Explain scd type 3 through mapping.

1026


what is sas application server, database server, sas olap server and sas metadata server? : Sas-di

1027


for whom is sas data integration studio designed? : Sas-di

1018


What a datastage macro?

1074


file having these input and we have to get 3 output using same job Input 1 1 1 2 3 4 4 4 o/p1 o/p2 o/p3 1 1 2 2 1 3 3 1 4 4 4

943


How to elaborate powercenter integration service?

1150


Explain the difference between detect alias and detect context?

1119


Which transformation should we use to normalise the COBOL and relational sources?

1226


Explain the new features of teradata?

1057


What is the difference between fastload and multiload?

1402


What is the use of aggregation when we have rollup as we know rollup component in abinitio is used to summarize a group of data record? Then where we will use aggregation?

1278


What is the difference between mapping parameter & mapping variable in data warehousing?

1005


Explain input and put function?

1154