Technology Questions

Q:

List the various Oracle database objects.

Answer

- TABLES
- VIEWS
- INDEXES
- SYNONYMS
- SEQUENCES
- TABLESPACES

Report Error

View answer Workspace Report Error Discuss

Subject: Oracle

0 2911
Q:

Explain Check constraint.

Answer

Oracle check constraint is used to ensure that before inserting the data in the database, it is validated and checked for the condition.
Example:
Below, the constraint is that the id has to be between 0 and 1000.
create table employee ( id number check (id between 0 and 1000), Name varchar(200) );

Report Error

View answer Workspace Report Error Discuss

Subject: Oracle

0 2906
Q:

Explain the use of keyword WITH ENCRYPTION. Create a Store Procedure with Encryption

Answer

It is a way to convert the original text of the stored procedure into encrypted form. The stored procedure gets obfuscated and the output of this is not visible to


CREATE PROCEDURE Abc


WITH ENCRYPTION


AS


<< SELECT statement>>


GO

Report Error

View answer Workspace Report Error Discuss

Subject: SQL

0 2902
Q:

What’s the difference between htmlentities( ) and htmlspecialchars( )?

Answer htmlspecialchars only takes care of , single quote ‘, double quote " and ampersand. htmlentities translates all occurrences of character sequences that have different meaning in HTML.
Report Error

View answer Workspace Report Error Discuss

Subject: PHP

0 2900
Q:

Which programming language was removed from the Visual Studio family when VB.net was released?

Answer

Visual Foxpro was part of Visual Studio 6.0.


It was excluded in the .Net version and was released as an independent programming language.

Report Error

View answer Workspace Report Error Discuss

0 2898
Q:

What are the restrictions when overriding a method ?

Answer

Overridden methods must have the same name, argument list, and return type (i.e., they must have the exact signature of the method we are going to override, including return type.)


The overriding method cannot be less visible than the method it overrides( i.e., a public method cannot be override to private).


The overriding method may not throw any exceptions that may not be thrown by the overridden method

Report Error

View answer Workspace Report Error Discuss

Subject: Java

0 2892
Q:

Describe the Basic Steps used to create a tiles application in DHTML.

Answer

- Create a template that designs a layout for your application.


- Create the composing pages.


- Create a definition which means that suppose that you configured Tiles, in web.xml, to startup using the TilesServlet, we need to specify which files will contain the Tiles definitions to load.


- Render the definition.

Report Error

View answer Workspace Report Error Discuss

Subject: Web Technology

2 2891
Q:

What is Interpreter in Java?

Answer

  • An Interpreter is a program that reads in as input a source program, along with data for the program, and translates the source program step by step.


 


The Java interpreter decodes each lines bytecode and runs a series of machine instructions for that bytecode. The JVM takes the byte code and generates machine code. The byte code is compiled to machine code, and the machine code is executed.

Report Error

View answer Workspace Report Error Discuss

7 2890