| Other ETL Interview Questions |
| |
| Question | Asked @ | Answers |
| |
| can Informatica be used as a cleansing tool? If yes, give
examples of transformations that can implement a data
cleansing routine. | | 1 |
| how to join two tables without using joiner transformation
.advantages of joiner over lookup and vice versa. | | 1 |
| what is the indicator file and where it is used? | | 1 |
| how to join two tables without using joiner transformation
.advantages of joiner over lookup and vice versa. | | 2 |
| what is HISTOGRAM? how to generate statistics? | | 1 |
| Eliminating of duplicate records without using dynamic lookups | IBM | 3 |
| When you have 2 servers in two different time zone and if
you need to extract data from 1 server and load it in
another server, how do you go about it? Best method to be
used. | | 3 |
| how do u set the size of block buffer? | | 1 |
| what is the meant by Normalization and de-normalization? | | 1 |
| Hello all,
Source Table(Flat File):- Target Table(Flat File):-
Date Date
01/08/2008(DD/MM/YYYY) 01/08/2008
02/08/2008
03/08/2008
04/08/2008
05/05/2008
My requiremnt is this. I need to do it by informatica,Plz
tell me how can i do it?
Thanks
| | 3 |
| Eliminating of duplicate records without using dynamic lookups | | 1 |
| what is the difference between normal & bulk loading? and
which one is recommended ? why? | | 1 |
| list the transformation used for the following:Heterogeneous
sources,Homogeneous sources,Find the 5 highest paid
employees with in a dept,create a summery table,generate
surrogate keys | | 1 |
| what are variable ports and list two situations when they
can be used? | Satyam | 3 |
| Difference between flat files and relational sources? | | 1 |
| what is the difference between OLTP database and data
warehousing database? | | 1 |
| how do u implement unconn.stored proc. in a mapping? | | 1 |
| if u can't find what you are looking for in lookup table,
how do you handle? | | 1 |
| what is a parameter when and where do u them when does the
value will be created. Designing time, run time. If u don't
create parameter what will happen? | | 1 |
| what happens if the info.server doesn't find the session
parameter in the parameter file? | | 1 |
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