Technology Questions

Q:

What is a view?

Answer

It is virtual table which is defined as a stored procedure based on one or more tables.

Report Error

View answer Workspace Report Error Discuss

Subject: Oracle

0 2311
Q:

Explain the difference between value types and reference types

Answer

Value type :


 



  • Stores the data

  • The value of value types is stored on the managed stack

  • They are lighter objects 

  • One variable can have only one value


Reference Type :



  • Stores the reference to the data

  • A reference type is allocated on the heap

  • They are heavier objects

  • Several variables can reference the same data


 

Report Error

View answer Workspace Report Error Discuss

Subject: .NET

0 2308
Q:

When this. non-static datamember is compulsory inside non-static method

Answer

Whenever there is local- variable/parameter inside the method with same name as data member.


Ex:


Class Sample {


 int a;


  void show() {


   int a=5;


   system.out.println(a); // 5


   system.out.println(this.a);//23


  }


}


class MainApp {


  Public static void main(String[] args) {


  Sample s = new Sample();


   s.a = 23;


   s.show();


   }


}


 

Report Error

View answer Workspace Report Error Discuss

Subject: Java

0 2308
Q:

What is the meaning of ABAP editor integrated with ABAP data dictionary?

Answer

ABAP Editor: Tool in the ABAP Workbench in which you enter the source code of ABAP programs and check their syntax. You can also navigate from the ABAP Editor to the other tools in the ABAP Workbench.

Report Error

View answer Workspace Report Error Discuss

Subject: ABAP

0 2307
Q:

What is Data Integration?

Answer

- The process of combining data from different resources.


- The combined data is provided to the users with unified view.


- Information from different enterprise domains are integrated – known as Enterprise Information Integration.


- Useful for merging information from different technologies among enterprises.


- The sub areas of data integration are 


1. Data Warehousing.


2. Data Migration.


3. Master Data Management.

Report Error

View answer Workspace Report Error Discuss

0 2305
Q:

What is DHCP scope?

Answer

A scope is a range, or pool, of IP addresses that can be leased to DHCP clients on a given subnet.

Report Error

View answer Workspace Report Error Discuss

0 2304
Q:

Explain primary key constraint.

Answer

Primary key constraint ensures that the column(s) always has a unique value to identify the record.
Example:
Below, the primary key is created for column id with name prim_id.
create table employee ( id number NOT NULL, Name varchar(200) Constraint prim_id primary key(id) );

Report Error

View answer Workspace Report Error Discuss

Subject: Oracle

0 2304
Q:

How to get the contents of an input box using Javascript?

Answer

Use the "value" property.
var myValue = window.document.getElementById("MyTextBox").value;

Report Error

View answer Workspace Report Error Discuss

Subject: Web Technology

0 2303