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 Technology Questions

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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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Subject: Data Warehousing

1 5790
Q:

What’s the difference between Enumeration and Iterator interfaces ?

Answer

Enumeration is twice as fast as compared to an Iterator and uses very less memory. However, the Iterator is much safer compared to Enumeration, because other threads are not able to modify the collection object that is currently traversed by the iterator. Also, Iteratorsallow the caller to remove elements from the underlying collection, something which is not possible with Enumerations.

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Subject: Java

0 5789
Q:

Which containers use a FlowLayout as their default layout ?

Answer

The Panel and Applet classes use the FlowLayout as their default layout.

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Subject: Java

3 5718
Q:

What is the access scope of a protected method?

Answer A protected method can be accessed by the classes within the same package or by the subclasses of the class in any package.
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Subject: Java

1 5711
Q:

What happens if the list-style-type property is used on a non-list element like a paragraph?

Answer

Here the property will be ignored without having any effect on the paragraph.

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Subject: Web Technology

3 5697
Q:

which keyword is used to define the macros in c++?

A) macro B) define
C) #define D) none of these
 
Answer & Explanation Answer: C) #define

Explanation:
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Filed Under: C++

1 5678
Q:

What is meant by pure virtual function?

A) Function which does not have definition of its own. B) Function which does have definition of its own.
C) Function which does not have any return type. D) None of the mentioned
 
Answer & Explanation Answer: A) Function which does not have definition of its own.

Explanation:

As the name itself implies, it have to depend on other class only.

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Filed Under: C++

2 5664
Q:

What is the IDD in IDMS?

Answer

IDD is the Integrated Data Dictionary. It contains information about the elements, record types, sets, maps and dialogues within the database.

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Subject: Mainframe Interview

1 5657