Unicode , Ucs ?

[kerthivasan]

Actually What R Unicode , Ucs And Utf?

What Is The Difference Between Them And Y There R These 3 Instead Of One?

[adit_sen]

Unicode is a industry standard which allows text / characters / symbols from nearly all writing systems of the world to be represented or manipulated by computers / electronic media.
http://en.wikipedia.org/wiki/Unicode

UCS is the Universal Character Set, which is a character encoding of the Unicode that contains a very large database of abstract characters, each identified by a name and a corresponding integer.
http://en.wikipedia.org/wiki/Universal_Character_Set

UTF is the Unicode Transformation Format, which is another character encoding of the Unicode to support a large range of characters. The basic difference between the UCS and the UTF is that initial encoding / characters of the UTF are same as the ASCII standard.
http://en.wikipedia.org/wiki/UTF-8

Hope this helps...

Cheers
Aditya