SDLC Models/Methodologies_1)Waterfall Model

Depends on the client’s requirements and Time period Management team decides the SDLC Model to implement the development process. We have several models among them some important models are listed below.

1)      Waterfall model                                                              

·      Whenever there is requirement for small applications which have clear requirements then Management opt for waterfall model.

·         This model contains all the SDLC phases.

·         After the completion of one phase the next phase will be started.

·         It follows linear sequential approach.

Requirements collection à Requirement Analysis à Design à Coding à Testing à Release and Maintenance.

When to choose: Small Application, Clear Requirements

Advantage: Simple and easy to develop the applications.

Disadvantage: Defect identification in early stages is not possible and this model will not support dynamic changes in the requirements.

 

Interview Questions_019: Difference between requirement collection and analysis

Interview Questions_020: On what basis  you decide whether the application is small or big?

Interview Questions_021: I have a client from some XYZ company related to supermarket. Shall we choose the waterfall model. If so, explain the total development process for that application..

Interview Questions_022: Can we get 100% clear requirements at requirements collection before coding phase??

Interview Questions_023: Now I know that there are dynamic changes in the requirements . Can I opt for waterfall Model?

Interview Questions_024: Using waterfall model I have developed the application . Now Want to change the requirements . What kind of situations I should face now??