I THINK U R NOT A TESTER....... SO U ASK THE QUESTION LIKE 
THIS...

IN SDLC(SOFTWARE DEVELOPMENT LIFE CYCLE) U HAVE 
 analysis--->design --->coding --->TESTING-->maintainance

THE DEVELOP TEAM IS THE BACK BONE OF THE PROJECT..... BUT 
THERE R DIFFERENT BUISNESS LOGIC WHICH IS DEVELOPED BY 
DIFFERENT DEVELOPERS... SO ALL THE CODES WHICH R DEVELOPED 
BY THE DEVELOPER MAY BE RIGHT ACCORDING TO HIS POINT OF 
VIEW... 

BUT THE MAINQUESTION IS HOW THE IS CODE OPTIMIZED......

THE DEVELOPER PROCEEDS WITH HIS OWN IDEA... AND HE DOESNT 
SEE TO HOW IT IS OPTIMIZED,.... 

THIS THING REFERS TO THE TERM QUALITY OR STANDARD OF CODE...

THE TESTING TEAM DOES THESE KINDS OF THINGS FOR A PROJECT 
IN A COMPANY... WHERE THE STANDARDS AND THE QUALITY ASPECTS 
R MAINTAINED AND WITH WHICH AN COMPANY CAN SURVIVE IN THE 
MARKET.... 

AND THATS THE TESTER OR TESTING TEAM FOR U.......

I am agree with N.ragav(persuing Tester)that the person who 
Questioned is not a tester and don’t know why testing 
actually happens in SDLC.

According to me, Testing is a interesting and challenging 
job. A tester always think that the application given for 
testing has lots and lots error in it.

Testing software means measure the quality of developed 
application. This includes, but is not limited to, the 
process of executing a program or application with the 
intent of finding errors.Quality is not an absolute; it is 
value to some person. With that in mind, testing can never 
completely establish the correctness of application. we 
also test the capability, reliability, efficiency, 
portability, maintainability, compatibility, and usability.
At the end developer cant be a tester because nobody in 
this world can critics his own developed application

AND By the way r u a tester vidya,,,, i think u should be a 
tester.....

ya i am tester..........what happen i told some think wrong 
or what?

Nothing like that..... wht u said was absolutely right 
friend... btw where r u working

i am working in chennai..........with Byzan Systems Pvt Ltd

can you refer me

what ragav there is no answer for u r question

i can refer u but the working place will be 
mumbai ...................

No problem.. i can join any where in india.. but i need job 
satisfaction..

okies send me ur resume on nadarvidhya2003@yahoo.co.in

Hi,
 
See if u know the concept u share it but dont criticise him
in any ways, He has posed that question bcoz he really dont
know any ways buddy kewl, I will help u solving ur query in
my own way..

Why Testing  - Testing because to check whether the software
is really of any use or not. 

See as a Developer they might think of their own code
working or not in simpler terms they are constrained to a
limited task and they really doesn't know the customer
requirements and will never follow Standards and procedures
which are heart of any software. 

I do agree with VIdya that no one can critic themselves. But
As a tester our task is to know in and out of the
application in other words we should be proud enough that we
will know the complete domain on which we are working. 

So developers test as their own way and as a tester we think
it as client way and try to see that we are atleast  90 % of
their satisfaction. 

Developers commit mistake and we rectify it.

CTT Me at coolshravan4u@yahoo.coin  if u have any queries
please do not hesitate

1. Point of view will be different

2. It is difficult to find our own mistakes

3. Devlopers will not take lot of time for testing. They 
will spend more time for coding rather than testing

4.If he/she mistaken  the requirement specification , than 
unable to test it.