Interview Questions

Q:

How do you generate Sequence number in Datastage?

Answer

Sequence numbers can be generated in Datastage using certain routines. They are


-KeyMgtGetNextVal


-KeyMgtGetNextValConn

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1 5226
Q:

What is the purpose of cluster analysis in Data Warehousing?

Answer

Cluster analysis is used to define the object without giving the class label. It analyzes all the data that is present in the data warehouse and compare the cluster with the cluster that is already running. It performs the task of assigning some set of objects into the groups are also known as clusters. It is used to perform the data mining job using the technique like statistical data analysis. It includes all the information and knowledge around many fields like machine learning, pattern recognition, image analysis and bio-informatics. Cluster analysis performs the iterative process of knowledge discovery and includes trials and failures. It is used with the pre-processing and other parameters as a result to achieve the properties that are desired to be used.

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Q:

How variable declaration in c++ differs that in c?

Answer

C requires all the variables to be declared at the beginning of a scope but in c++ we can declare variables anywhere in the scope. This makes the programmer easier to understand because the variables are declared in the context of their use.

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Subject: C++

1 5197
Q:

$message vs $$message in PHP?

Answer

$message is a variable with a fixed name. $$message is a variable whose name is stored in $message. 


If $message contains "var", $$message is the same as $var.


 

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Subject: PHP

0 5186
Q:

Which among the following is a scope resolution operator?

A) : B) ::
C) :? D) None
 
Answer & Explanation Answer: B) ::

Explanation:

:: is the scope resolution operator

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Filed Under: Java
Job Role: Software Architect

0 5169
Q:

What is Mainframe Testing?

Answer

Mainframe Testing is similar to client-server applications testing, but you have to know how to operate basic TSO and ISPF commands and menus, view mainframe files, look at and use SDSF or other output tool, log on CICS and transactions, use FTP or another transfer protocol, submit the batch job - it's for QA testing of mainframe applications.

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Q:

A co-worker is rude to customers, what would you do?

Answer

That would depend on what kind of a rapport I had with him. If I felt comfortable, I would probably mention that being rude is probably going to be bad for him in the long run, since unhappy customers reflect badly on the sales associate. Otherwise, I would mention to the supervisor what I had witnessed, and let him handle it.

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Q:

What are the 4 key phases of business development?

Answer

The 4 key phases of business development are: Forming, Storming, Norming and Performing.

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