Interview Questions

Q:

What is a sub query? What are its various types?

Answer

- Sub Query also termed as Nested Query or Inner Query is used to get data from multiple tables.
- A sub query is added in the where clause of the main query.

There can be two types of subqueries:
a.) Correlated sub query :
- It can reference column in a table listed in the from list of the outer query but is not as independent as a query.
b.) Non-Correlated sub query :
- Results of this sub query are submitted to the main query or parent query.
- It is independent like a query

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Subject: Oracle

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Q:

Can HTML 5 get the geographical position of a user?

Answer

- Yes, HTML 5 can get the location of a user with the use of Geolocation API.


- Use getCurrentPosition() method to get the user’s current position.

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Subject: Web Technology

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Q:

Explain about roll area , Dispatcher, ABAP-Processor.

Answer

Dispatcher recieves the request from client and assigns the request to one of the work process.
Roll area: Each workprocess works in a particular memory that memory is known as Role Area, which consists of User context and session data.
ABAP- Processor :is an interpretor which can execute logic

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Subject: ABAP

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Q:

What is the difference between Silverlight 1.0 and 2?

Answer

Silverlight 1 is purely AJAX and JavaScript based. All the code has to be written in JavaScript and XAML. 


 Silverlight 2 supports managed code. When the Silverlight 2 runtime is installed, it installs a limited version of the .NET runtime on the client machine

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Q:

What is the Oracle Web Cache?

Answer

Oracle Web Cache is a secure reverse proxy cache and a compression engine deployed between Browser and HTTP server, Browser and Content Management server to improve the performance of web sites by caching frequently accessed content. Oracle Web Cache supports:


- Static content caching


- Dynamic content caching


- Partial Page catching


- Request Filtering.

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Subject: Oracle

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Q:

In a DB2-CICS program which acts as co-ordinator and which is the participant?

Answer

DB2 acts as the participant and CICS acts as a co-ordinator


 

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Q:

What is the use of overriding?

Answer

- By using method overriding a sub class can change the definition of super class method.


- By using overriding a sub class can modify the functionality of the super class.

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Subject: Java

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Q:

What is Payroll Journal?

Answer

A payroll journal is like a payroll register. It has salary, bonuses, commission in other words earnings, any deductions such as 401k, fsa etc, state and income taxes etc.
It shows the gross salary less any deductions "Net pay" for the period.

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