Technology Questions

Q:

In the JCL, how do you define the files referred to in a subroutine ?

Answer

Supply the DD cards just as you would for files referred to in the main program.

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Q:

How to upload files in Amazon S3?

Answer

Amazon S3 provides uploading of large files and retrieve small offsets for end-to-end transfer data rates. The large file gets stored into small files that are smaller in size. Amazon S3 stores multiple of files together in a bundle or in a compressed form, For example in .gzip or .gz format and then convert them into Amazon S3 objects. The files get uploaded on the Amazon server by the use of FTP or another protocol and then retrieved through the HTTP GET request. The request includes the defined parameters like URL, offset (byte-range) and size (length).

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Subject: Cloud Computing

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Q:

Describe Android Application Architecture.

Answer

Android Application Architecture has the following components:
* Services – like Network Operation
* Intent - To perform inter-communication between activities or services
* Resource Externalization - such as strings and graphics
* Notification signaling users - light, sound, icon, notification, dialog etc.
* Content Providers - They share data between applications

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Q:

What strategies are available for backing-up an Oracle database?

Answer

The backup strategies that are provided by Oracle are as follows:


- Logical backup using Exports and import.


- Physical file system backup


- RMAN Recovery Manger which is also known as incremental files system backup.

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Subject: Oracle

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Q:

How do you insert a record with a nullable column?

Answer

To insert a NULL, move -1 to the null indicator


To insert a valid value, move 0 to the null indicator


 

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Q:

How to open a file?

Answer

<?php
$file = fopen("file.txt","r");
?>

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Subject: PHP

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Q:

How do you define a traceability matrix?

Answer

Traceability matrix is a cross matrix for recording the requirements through each stage of the requirements gathering process. This matrix should also take into account any changes in the scope during the life of the project. 


     At the end of the project this matrix should show each function built into a system, its source and the reason that any stated requirements may not have been delivered. 

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Q:

What is the difference between view and materialized view?

Answer

View:


- Tail raid data representation is provided by a view to access data from its table.


- It has logical structure can not occupy space.


- Changes get affected in corresponding tables.


 


Materialized view


- Pre calculated data persists in materialized view.


- It has physical data space occupation.


- Changes will not get affected in corresponding tables.

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