Interview Questions

Q:

What is the difference between array and ArrayList ?

Answer

Array is collection of same data type. Array size is fixed, It cannot be expanded.


 


But ArrayList is a growable collection of objects.ArrayList is a part of Collections Framework and can work with only objects.

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Subject: Java

0 1796
Q:

How to define payroll?

Answer

Payroll is defined as its a remuneration given for work done by individuals on daily,monthly,weekly etc....

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0 1794
Q:

Whats a struct?

Answer

A struct is a special C data type that encapsulates other pieces of data into a single cohesive unit. Like an object, but built into C.

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Q:

JavaScript vs. Jscript

Answer

JavaScript:


- JavaScript is a scripting language developed by Netscape Communications.


- The Netscape Navigator interprets JavaScript embedded into Web pages.


- JavaScript is used for developing web applications.


- It is not dependent on Sun Microsystem's Java language.


JScript:


- Microsoft JScript is an open implementation of Netscape's JavaScript.


- JScript is a scripting language designed to create active online content. ActiveX controls, Java programs, etc can be linked and automated in the web pages using JScript.

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Subject: Web Technology

0 1793
Q:

What is XML?

Answer

XML, Extensible Markup Language, is an open, text based markup language that provides structural and semantic information to data. XML is a metalanguage that can be used to create other language. It is used to structure and describe data that can be understood by other applications. Using XML, we can separate the user interface from data.


Features of XML :


- XML is a generalized markup language that means one can define his/her own tag sets.


- A valid XML document contains rules and is self-describing.


- The rules that are found in DTD allow the documents to be validated.

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Subject: Web Technology

0 1792
Q:

What are the basic SQL*Plus commands?

Answer

1) START- Used to run a SQL script.
2) ACCEPT- Accepts input from user.
3) GET- Gets the sql file from user to place in buffer.
4) LIST- Displays the last command executed.
5) RUN- Used to list and run the command in buffer
6) SHOW- Shows the environment settings. Example: SHOW PAGESIZE

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Subject: Oracle

0 1790
Q:

In a database table, the category of information is called

A) Record B) Field
C) Tuple D) None of the above
 
Answer & Explanation Answer: B) Field

Explanation:

In a database table, the category of information is called Field.

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0 1788
Q:

What are the problems in processing batch input sessions and How is batch input process different from processing online ?

Answer

PROBLEMS:


i) If the user forgets to opt for keep session then the session will be automatically removed from the session queue(log remains). However if session is processed we may delete it manually.


ii)if session processing fails data will not be transferred to SAP database table.

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Subject: SAP

0 1788