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Discuss some of the problems that are faced during maintenance of software.
The problems are:
- Often another person or group of persons working over the years in isolation from each other writes the program.
- Often the program is altered by person who did not understand it clearly, resulting in a deterioration of the program's unique organization.
- There is a high staff turnover within information technology industry.
Because of this persons who are not the original authors maintain lots of systems. These persons may not have adequate knowledge about the system.
- Some problems only become clearer when a system is in use. Many users know what they require but lack the ability to express it in a form understandable to programmers. This is primarily because of information gap.
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Name the commonly used architectural styles. i. Data centered architecture. ii. Data flow architecture. iii. Call and return architecture.
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WRITE A SHORT NOTE ON PERT CHART
Define process maturity. In recent years there has been a important emphasis on process maturity. The Software Engineering Institute. (SEI) has developed a comprehensive model
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