Informatica Interview Questions
Questions Answers Views Company eMail

performance wise which one is better in joiner and lookup transformation

2 5694

which transformation uses cache?

Keane India Ltd,

3 5845

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 5978

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 6708

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 7157

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

Keane India Ltd,

2109

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

emc2,

2 4340

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 10620

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 7984

can any one explain me about junk dimension

4 5198

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

2 4537

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 4313

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 9829

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 6851

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 5196


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Un-Answered Questions { Informatica }

What are the different versions of informatica?

665


What are Dimensional table?

599


Why union transformation is an active transformation?

645


Enterprise data warehouse your projects phase by phase explain?

1444


What are the challenges you have faced in your Project (DWH- ETL)? Explain with example?

7662






What is the difference between a repository server and a powerhouse?

794


Explain the use of aggregator cache file?

665


How can we delete duplicate rows from flat files?

730


TELL ME ONE COMPLEX MAPPING IN UR PROJECT? chandumba2005@gmai.com

1455


tell me 5 session failure in real time how can you solve that in your project?

1623


What is mapping debugger?

563


how will u take the data from clint server and next what u do in datamodeling what u will u do in staging area what u will u do next what u are doing please give the step by step by process

1684


What are the static cache and dynamic cache in informatica?

700


What is an Integration service in Informatica?

693


What you know about transaction control transformation?

546