Technology Questions

Q:

Explain i) Rename ii) Alias.

Answer

- Rename : It is a permanent name provided to a table or column.
- Alias : It is a temporary name provided to a table or column which gets over after the execution of SQL statement.

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Subject: Oracle

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Q:

What is the purpose of UIWindow object?

Answer

The presentation of one or more views on a screen is coordinated by UIWindow object..

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Subject: IOS

7 3087
Q:

What is a AngularJS?

Answer

AngularJS is a framework to build the large scale and high performance web application while keeping them as easy-to-maintain. These are the features of AngularJS framework.


AngularJS is a powerful Script based on JavaScript development framework to Implement RICH Internet Application (RIA).


AngularJS is a developers options to write client side application (using JavaScript) in a clean MVC (Model View Controller) side.


Application are written in AngularJS is also cross-browser compliant. AngularJS automatically handles JavaScript code suitable for any browser.


AngularJS is an open source, completely free, and used by large number of developers around the world. It is licensed under the Apache License version 2.0.

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Subject: Web Technology
Job Role: Software Architect

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Q:

What is the fastest type of JDBC driver ?

Answer

Type 4  (JDBC Net pure Java Driver) is the fastest JDBC driver.  Type 1 and Type 3 drivers will be slower than Type 2 drivers (the database calls are make at least three translations versus two), and Type 4 drivers are the fastest (only one translation).

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Subject: Java

1 3084
Q:

For printing out strings, there are echo, print and printf. Explain the differences.

Answer - echo is the most primitive of them, and just outputs the contents following the construct to the screen. print is also a construct (so parentheses are optional when calling it), but it returns TRUE on successful output and FALSE if it was unable to print out the string. However, you can pass multiple parameters to echo, like:

and it will output the string "Welcome to TechInterviews!" print does not take multiple parameters. It is also generally argued that echo is faster, but usually the speed advantage is negligible, and might not be there for future versions of PHP. printf is a function, not a construct, and allows such advantages as formatted output, but it’s the slowest way to print out data out of echo, print and printf.
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Subject: PHP

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Q:

What are the activities we will do in SAP MM module implementation?

Answer

Various activities in SAP MM are : Inventory, Warehouse, Purchasing, Vendor evolution, Invoice varification, etc.

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Subject: SAP

1 3077
Q:

What is locking ? what are the advantages of locking?

Answer

Locking is a mechanism to ensure data integrity while allowing maximum concurrent access to data. It is used to implement concurrency control when multiple users access table to manipulate its data at the same time.


Advantages :


- Avoids deadlock conditions


- Avoids clashes in capturing the resources

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Subject: Oracle

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Q:

Name and explain the type of locks?

Answer

There are three types of lock, namely:


Shared – This type of lock permits two or more programs to read from the locked space but does not allow them to change it.


Update – This lock is more lenient. It permits the program to read and change the locked space.


Exclusive – This lock restricts all users from accessing the locked space.

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