U mean lifecycle model in the sense Waterfall model

Ok diff is nothing but all phases are dependent

i mean one phase output is input 4 another phase

In V model 4 every development phase we have testing phase 
pareell

all phases are independent

diff b/w Life cycle model & V model is 
Life cycle model the process will be Step by step and u'd to
develop test cases in each stage
V MODEL:- Both developement & testing will go parallely

In SDLC, testing comes ONLY after the implementation stage 
whereas in V- Model, testing is carried out parallelly with 
all development phases i.e  right from the user 
requirements it's reviewed.

Life Cycle Model                          V-Model
(1) Express all phases of Software.           Express til 
testing only.
(2) Use full when requirements are stable.    Usefull when 
requirements are not stable also.
(3) Testing is a Phase here.                  Testing is an 
activity(involves in every phase)
(4) Testing uncouncious model                 Testing 
concious model.
(5) QA,V&V and Reliability are not effective. Are effective 
here.
(6) Follows ETVXM architecture.               (6) Same here 
but still efficiently

VMODEL - V- Model which talks about Verification and 
Validation. Left side of V-model called verification 

( Requirement analysis , 
Specification,Design,Implementation) Right side of V-model 
called Validation ( Unit testing , integration 

testing , system testing,User acceptance testing)

left side                        rightside
BRS/Verification->Acceptence testcases preparaton validation

SRS/Verification----->System testcases preparions/Validation

Design/Verification-->Integratin tcases preparation/Validati

Buildlevel/Verificat--> unit test cases prepa/Validation
 
Simultanious approach in V model