testing is nothing but checking whether the reached customer
expectations or not ,coming to point 

In manual tes some disadvantages is there like 
more 1)no. of persons r required,2)time
consuming,3)tidness,4)can't repeat same funcanality again&
again so we use automation.

in automation tes also some disadvantages is there like 1)
it is too cost 2)can't automate all the areas 3) experts is
not there for doing automation so we use manual tes.

last 1 is which one is efficient & effective means according
to the situation we will tell but now most of the companies
will do manual tes 90% the remaing will do automation.

in automation testing there is no documentation,quick 
testing ,testers involvement is less ,comprehensiveness 
more. the only limitation is complexity more.

EFFECTIVE TESTING:THIS IS NOTHING BUT FINDING OF MORE NUMBER
OF BUGS BY EXECUTING MORE NUMBER OF TEST CASES

EFFICIENT TESTING:THIS IS NOTHING BUT FINDING OF MORE NUMBER
OF BUGS BY EXECUTING LESS NUMBER OF TEST CASES

EFFECTIVE AND EFFICIENT TESTING TOGETHER CALLED HIGH YIELD
TESTING.
MANUAL TESTING COMES UNDER EFFICENT TESTING AND AUTOMATION
COMES UNDER EFFECTIVE.CORRECT ME IF IM WRONG

Hi,
          Manual testing is the mandatory test. To automate 
the test first by doing the manual test we should make the 
application stable, then we can proceed for the automation. 
Even though manual test takes time and more human resource 
it is the efficient way to test the application. Automation 
has it's own advantages. Automation is fast, reliable and 
repeatable.
   For the small project it's better to use the manual 
test, it's not worth of buying the tool and training the 
testers.
     For the big and on going projects its better to 
automate. Because ongoing projects need the changes and 
enhancements. Automation comes under effective way.