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Informatica Interview Questions
Questions Answers Views Company eMail

performance wise which one is better in joiner and lookup transformation

2 6565

which transformation uses cache?

Keane India Ltd,

3 7325

suppose we have 1 to 10 records.In router transformation we had given two condition A>= 5 A<=5 then what will be the output?

emc2,

2 6987

In update strategy t/r we had given dd_insert condition & in session we gave delete condition . Then what will happen? mapping will run ?

emc2,

3 8006

In SCD type 2 if we had select date range. then suppose we had inserted today's date(eq. date is 30 aug 2010) then start date will be today's date(30 aug 2010) what will be the end date,we cant leave it blank?

Cognizant, emc2,

2 8281

Explain Dataware house architecture .how data flow from intial to end?

Keane India Ltd,

2584

how many new transformations are introduced in 8.1 which are not available in 7.1? any new transformation in 8.6?

emc2,

2 5307

suppose i have 1000 records and i want to load half of the record in target 1 and half in target2.how u'll do?

IBM,

9 13337

we have three columns and two rows. col1 col2 col3 a b c want to change into 2 columns and 3 rows ,how? col1 a col2 b col3 c which transformation u'll use and how?

Cognizant,

3 9548

can any one explain me about junk dimension

4 6672

where actually the usage of push down optimization happens...

2 5513

while for 100 records in source table loaded sucessfully in trgt table . assume ,session will take 10min or 5 min to successfully succeeded. then 100 million records r there in source how much time will take by session to succeeded. there no fail ok.trgt table will load 100 million records with out any errors . don't tell perfect time . assume your self how much time to succeeded?

IBM,

1 4984

What type of sorting algorithm does the Sorter Transformation use, to do its sorting Operation? 1. Bubble sort 2. Insertion sort 3. Shell sort 4. Merge sort 5. Heapsort 6. Quicksort 7. Bucket sort

3 10992

lookup is passive y can't it be active? let us say i have some records in my source like 101,rohit,1000 101,rohit,1000 102,kumar,2000 like wise now as it is having multiple matches i return only first,last value it can't return bouth the values that means lookup is acting as select distinct right by default what means it is active?

IBM,

5 8433

differnece between joiner and a look up(please don't give just definitions)....i mean in which scenario it is better to use joiner and in which scenario better o use lookup ??

IBM,

2 6268


Post New Informatica Questions

Un-Answered Questions { Informatica }

Explain direct and indirect flat file loading (source file type) - informatica

1318


Performance tuning( what you did in performance tuning)

1987


Hi, There is a session in my workflow which is running for a long time, atlast we found the cause is the missing index. My session is running via a stored procedure. Can I create an Index on the table which the stored procedure is using while my session is running? Please suggest. My Informatica version is PC 8.0.6 My Oracle APPS is 11.5.3. Thanks,

7186


What is the function of aggregator transformation?

1085


What are the advantages of using informatica as an etl tool over teradata?

1022


can you please explain me pre session and post session options?

7564


Explain the etl program with few examples.

1050


Define Pmrep command?

1057


What are the types of schemas we have in data warehouse and what are the difference between them?

941


How many ways are there to do 'remove duplicate records in informatica'?

1014


What is the difference between SOURCE and TARGET BASED COMMITS? What are the deliverables?in your project?

2122


How to elaborate powercenter integration service?

1131


In development project what is the process to follow for an etl developer from day1

1724


Separate from a database, an information bazaar, and an information stockroom?

1089


What is the procedure for creating independent data marts from informatica 7.1?

1066