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What is Delphi model?
In Delphi method, a number of parameters to be considered based on as experts estimates.
The group estimate is taken as on an average of the weighted individual estimtes, computed as
Estimate=(lower bound of estimate+4*most likely estimate +upper bound of estimate)/6
Variance=(upper bound of estimate-lower bound of estimate)/6
What are the advantages and disadvantages of big-bang? Advantages: This approach is simple. Disadvantages: It is hard to debug. It is difficult to isolate errors while testi
What are Quality factors? For large projects with 'average' capabilities, the development process verifies product quality. For small projects, the capabilities of the deve
The task in this project is to design a normalized database that could be used to collect and store information for a video rental outlet. The database should be structured to s
What are the prototyping approaches in software process? i. Evolutionary prototyping - In this approach of system development, the initial prototype is prepared and it is then
Why software change occurs? Software change happens because of the following reasons. New needs emerge when the software is used. The business environment changes. Errors need
Distinguish between verification and validation. Verification refers to the set of activities that make sure that software correctly executes a specific function. Validation re
Regression test cases which a program has previously implemented correctly in order to detect errors spawned by changes or corrections done during software development and maintena
What are the Rules for making DFD The below factors must be considered when making DFDs: 1. Keep a note of all processes and external entities. Give unique names to th
What is a data object? Data object is a collection of attributes that act as an aspect, characteristic, quality, or descriptor of the object.
Importance of function point: This is independent of the languages tools, or methodology used for execution. They can be estimated from requirement specification or desig
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