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Q. Discuss some of the problems that are faced during maintenance of software?
- Habitually another person or group of persons working over the years in isolation from each other writes the program.
- Habitually the program is changed by person who did not understand it clearly resulting in a deterioration of the program's original organization.
- There is a high staff turnover in the information technology industry. Because of these people who aren't the original authors maintain many systems. These persons mayn't have adequate knowledge about the system.
- Some problems merely become clearer when a system is in use. Several users know what they want but lack the ability to express it in a form understandable to programmers. This is mainly because of information gap.
Explain a variable? "Variables" are data items in a program whose values can change.
Compare and contrast two operating systems
Q. What do you mean by Polymorphism? Polymorphism:- Polymorphism includes the ability to use the same message to objects of different classes and have them behave differently.
Explain the Evolutionary Model. Ideal for software products that have their feature sets redefined during development because of user feedback and other factors. The Evolutiona
An identified set of software features to be calculated under specified conditions by comparing actual behavior with the needed behavior described in the software documentation.
Write short note on the various estimation techniques. Algorithmic cost modelling - the cost estimation is depend on the size of the software. Expert judgement - The experts fr
Explain the Various phases of SDLC Various phases of SDLC are defined as below: Requirements Analysis Design Coding Software Testing Maintenance.
What is the benefit of modular design? Changes made during testing and maintenance becomes manageable and they do not influence other modules.
What is cardinality in data modelling? Cardinality in data modeling, cardinality verifies how the number of occurrences of one object is related to the number of occurrences of
Validation (Product Oriented) Validation is worried with whether the right functions of the program have been properly executed, and that this function will properly make the c
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