Technology Questions

Q:

What is sqlcode -811?

Answer

SELECT statement has resulted in retrieval of more than one row.

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Q:

What do you mean by stack unwinding?

Answer

Stack unwinding is a process of calling all destructors for all automatic objects constructed at run time when an exception is thrown. Destructors are called between the places where the exception was thrown and where it is caught.

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Subject: C++

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Q:

What JSON framework is supported by iOS (iPhone OS) ?

Answer

  • SBJson framework is supported by iOS.

  • It is a JSON parser and generator for Objective-C (Objective-C is the primary programming language you use when writing software for OS X and iOS. It is a superset of the C-programming language and provides object-oriented capabilities and a dynamic runtime).

  • SBJson provides flexible API's and additional control that makes JSON handling easy.

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Q:

Where SQL server user names and passwords are stored in SQL server?

Answer

They get stored in System Catalog Views sys.server_principals and sys.sql_logins.

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Subject: SQL

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Q:

Describe about Physical Data Integration?

Answer

- Physical Data Integration is all about creating new system that replicates data from the source systems.


- This process is done to manage the data independent of the original system.


- Data Warehouse is the example of Physical Data Integration.


- The benefits of PDI include data version management, combination of data from various sources, like mainframes, flat files, databases.


- A separate system is needed for handling vast data volumes.


 

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Q:

Which JavaScript objects are not accessible to web worker?

Answer

Following JavaScript objects are not accessible to web worker: 


- The window object


- The document object


- The parent object

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Subject: Web Technology

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Q:

What is purpose of VSAM?

Answer

VSAM acts as an interface between Application program & Operating System.

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Q:

Keeping the actoins and attributes together under a single unit is called 

A) Encapsulation B) Information Hiding
C) Polymorphism D) Inheritance
 
Answer & Explanation Answer: A) Encapsulation

Explanation:

Encapsulation is a process of binding the data objects together under a single unit.It is one ofthe elements of oops

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Filed Under: Java

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