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Define the method of Direct changeover
With this technique, old system is stopped and new system is used Straight away;
- This method can be disastrous if new system fails at any point
- Though, benefits are immediate and less time is wasted
- Costs are reduced (just one system in use so save on staff costs)
- Less likelihood of a malfunction as the new system would have been fully tested
Which phase is not available in software life cycle? Abstraction is the only phase which in not available in software life cycle
How a prototype can be categorised 1. A paper prototype which is a model depicting human machine interaction in a form which makes user understand how such interaction, would
What is meant by System Requirements? Place the system services and constraints in detail. Serves as a link between the system purchaser & the system developer.
Define maintenance. Maintenance is defined as the procedure in which changes are executed by either modifying the existing system's architecture or by adding new mechanism to t
Q. Show the cost drivers used in COCOMO model? A variety of attributes of cost drivers used in COCOMO model are: 1. Physical attributes : These are worried with required
solve inequalities and graph the solutions: [z/25-1]
Define Verification &Validation. Verification: The set of activities that make sure that software correctly executes a specific function. Validation: The set of activiti
a) There are four steps or activities in needs engineering: elicitation, specification, validation, and negotiation. Briefly explain the task of every of the four steps. Why needs
What is Usability? Ans) "Usability" means simple of use; the simple with which a user can learn to control, prepare inputs for, and intended the outputs of a software product.
Explain the prototyping approaches in software process. Two approaches i. Evolutionary prototyping - In this approach of system development, the initial prototype is prepare
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