1. CTS Informatica Interview Question Answers
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Informatica Interview FAQs And Answers
Informatica Interview Questions Collection
What is degenerate dimension?
Dimension which has no dimension table of its own and is derived from the fact table.
What is requirements gathering?
It is carried out by Business Analyst. It is nothing but interacting with end users and getting to
know what his requirements are. Based on his requirements, the rest of the phases Analysis,
Design, Implementation and Testing and finally Maintenance are carried on.
What is Junk dimension?
The dimension that is formed by lumping of smaller dimensions is called Junk dimension.
What is Staging Area?
Staging Area is indeed a database where data from different source systems are brought
together and this database acts as an input to Data Cleansing.
What are the types of joins in Informatica and in Oracle?
There are four types of joins in oracle
equi join
non equi join
self join
outer join
Joins in informatica
master join (right outer join)
detailed join (left outer join)
normal join
What is the file extension or format of files for the Informatica Objects like sessions,
mappings etc. in Repository?
The format of files for Informatica Objects in Repository is XML
Where can we find Versioning in Informatica? What happens if Versioning is turned off?
In Informatica, we can find Versioning in Repository Manager. If Versioning is turned off, we will

2. not be able to track the changes for the respective Sessions/Mappings/Workflows.
What is tracing level? What are the types of tracing level?
Tracing level is the amount of information that Informatica server writes into a log file.
Types of tracing level
Normal
Terse
Verbose init
Verbose data
In joiner transformation, we take the table with lesser number of rows as master while the
more number of rows as detailed. Why?
In joiner, each and every row of the master is compared with every row of the detailed and so, the
less number of rows in master, the less is the number of iterations and so better is the
performance of the system.
What are all the databases the Informatica server on windows can connect to?
Informatica server on windows can connect to
SQL server database
Oracle
Sybase
Teradata
MS Access
MS Excel
Informix
DB2
What are the databases the Informatica server on UNIX can connect to?
Informatica on UNIX can connect to
Sybase
Teradata
Informix
DB2
Oracle
What is an overview window?
It is a window where you can see all the transformations in a mapping.
In how many ways we can update a source definition?
Two ways
We can reimport the source definition
We can edit the source definition
Informatica Interview Questions Collection 2
Informatica Interview Questions Collection 1
Informatica ETL Interview Questions
IBM Informatica Technical Questions
Informatica Interview Questions Collection
Informatica Technical Questions Collection