Interview Questions

Q:

Explain unique Constraint.

Answer

A unique constraint on a column uniquely identifies the record by a combination of one or more fields. Few unique constraint fields can have a NULL value as long as the combination of values is unique.


Example:
create table employee ( id number NOT NULL, dob DATE, professor_id NOT NULL, Name varchar(200) Constraint id_unique UNIQUE(id,dob) );

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Subject: Oracle

0 1957
Q:

What are meta tags used for?

Answer

-To store information usually relevant to browsers and search engines.


-To only store information usually relevant to browsers


-To only store information about search engines.


-To store information about external links

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0 1956
Q:

What is the difference between method overriding and overloading?

Answer

Overriding is a method with the same name and arguments as in a parent, whereas overloading is the same method name but different arguments

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Subject: Java

0 1956
Q:

What is end-to-end testing?

Answer

Similar to system testing, the *macro* end of the test scale is testing a complete application in a situation that mimics real world use, such as interacting with a database, using network communication, or interacting with other hardware, application, or system.

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Subject: QA Testing

0 1955
Q:

What are windows object and navigator object in JavaScript?

Answer

Windows object is top level object in Java script. It contains several other objects such as, document, history, location, name, menu bar etc., in itself. Window object is the global object for Java script that is written at client-side.


Information pertaining to the client browser and system is returned by the navigator object of JavaScript. Navigator object is the top level object for all users.

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Subject: Web Technology

0 1952
Q:

What is the difference between a Windows server operating system and a workstation version?

Answer

The server version of a Windows operating system is designed to provide more optimized networking services over a network. It can manage domains better and it includes more security feature and data backup support. Workstation versions act merely as clients and therefore do not need to have as much resources when compared to the server versions.

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0 1951
Q:

List out few of the applications that make use of Multilinked Structures?

Answer

Sparse matrix,


Index generation

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Subject: Technology

1 1951
Q:

What is an ABAP?

Answer

ABAP (Advanced Business Application Programming) is a high level programming language created by the German software company SAP. It is currently positioned as the language for programming SAP's Web Application Server, part of its NetWeaver platform for building business applications. Its syntax is somewhat similar to COBOL.

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Subject: SAP

0 1950