oracle

set operators:
    union
    union all
    intersect
    minus
------------------------------------------------------------------------------------------------------------------------------------guidelines:
    1.the expression in the select list must match in number and datatype
    2.duplicate rows are automatically eliminate expect in union all
    3.the output is stored in ascending order by default expect in union all.
------------------------------------------------------------------------------------------------------------------------------------
example for union:
    select name from balan union select sname from tb_1;
------------------------------------------------------------------------------------------------------------------------------------
example for union all
    select name from balan union all select sname from tb_1;
------------------------------------------------------------------------------------------------------------------------------------
example for intersect
    select name from balan intersect select sname from tb_1;
------------------------------------------------------------------------------------------------------------------------------------
example for minus
    select name from balan minus select sname from tb_1;
------------------------------------------------------------------------------------------------------------------------------------

PGP most lovable college

A small visit to my ug college life

my native place is dindigul. I did my higher secondary in christian matriculation higher secondary school,oddanchatram. 

unexpectedly I joined BCA in PGP arts and science college. My ug college has very good atmosphere. I like my college atmosphere very much.

                          

 my college building:

My college building

during rainy my college look like this :

while raining my college look this 

 I stayed in hostel two years. I got so much friends in both hostel and college.

I learn so much good things from them. 

My friend circle: 

My friends

I like my friends very much. first I want to say thank you for PGP institution who brought all the 37 members under one roof.

Pillar strength of PGP:

Principal of pgp arts and science college.

The selfless pioneer who shaping CS department:  

My beloved HOD

 our most lovable person:

Our class in-charger

 my speech at farewell party:

In farewell party(hod,principal,vice principal in chair)

 enjoyable days:

jeeva and me in goa

 I am with my best friends:

Mathi and me

Guna and me

 Farewell gallata:

Last day gallata in my college:

 Conclusion:

               I am very lucky to have this type of friends and staffs and college.

I thank god who gave nice persons to me as my family members.

MONO RAIL VS METRO RAIL

KNOW THE DIFFERENCE BETWEEN MONORAIL AND METRO RAIL

MONO RAIL

METRO RAIL

Monorail and Metro Rail are the efficient and fast means of public transport. However both are different in design, cost and infrastructure.

MONO RAIL	METRO RAIL
It runs on single rail	It  runs on two parallel rails just as traditional rails.
It runs on a single line laid on a beam in the air	it has an independent rail track but it has two rails and may not be high in the air.
monorail is narrower than the train itself	It runs underground, on ground and over the ground. It uses two rails to run.
Mono rail uses the principal of magnetic levitation.	metro rail uses the traditional approach. However it uses independent line.
It is called magnetic levitation as the train looks to be running in the air.	Electricity is used as energy to run it

MONO RAIL:

Ø  Monorails were developed in order to connect two places where material must be transported without any delay and obstacle. It originated in the 50’s. .

Ø  First of all Japan developed it further in order to solve the problem of heavy traffic jams.

Ø  Hundreds of thousand passengers travel in monorail daily in Tokyo.

Ø  The train is originated in Germany

Ø  There looks a gap between wheels ate the rail.

Ø  It is the fastest running train in the world. Its speed is 500kmph.

METRO RAIL:

Ø  Metro rail is mean of public transport in many big cities of the world.

Ø  It runs underground, on ground and over the ground. It uses two rails to run.

Ø  Some cities of the world which have very successful system of Metro Rail include Shanghai, London, New York, and Delhi.

Ø  It is called metro as it runs mostly in metro cities of the world.

Ø  The major difference between Mono Rail and Metro Rail is regarding their rails. Metro train uses two rails while mono rail uses a single rail.

Ø  metro rail uses the traditional approach. However it uses independent line.

Ø  Metro rails runs slower than monorail.

WHAT IS ANDRIOD ?

ANDROID OPERATING SYSTEM:

What is Android?

•         A software platform and operating system for mobile devices

•         Based on the Linux kernel

•         Developed by Google and later the Open Handset Alliance (OHA)

•         Allows writing managed code in the Java language

•         Possibility to write applications in other languages and compiling it to ARM native code (support of Google? No)

•         Unveiling of the Android platform was announced on 5 November 2007 with the founding of OHA

Advantages 

There are a host of advantages that Google’s Android will derive from being an open source software. Some of the advantages include:

•         The ability for anyone to customize the Google Android platform

•         The consumer will benefit from having a wide range of mobile applications to choose from since the monopoly will be broken by Google Android

•         Men will be able to customize a mobile phones using Google Android platform like never before

•         Features like weather details, opening screen, live RSS feeds and even the icons on the opening screen will be able to be customized

•         As a result of many mobile phones carrying Google Android, companies will come up with such innovative products like the location

•         In addition the entertainment functionalities will be taken a notch higher by Google Android being able to offer online real time multiplayer games

Limitations

Bluetooth limitations

o   Android doesn't support:

§  Bluetooth stereo

§  Contacts exchange

§  Modem pairing

§  Wireless keyboards

But it'll work with Bluetooth headsets, but that's about it

Firefox Mobile isn't coming to Android

Apps in Android Market need to be programmed with a custom form of Java

            →  Mozilla and the Fennec won't have that