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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.
State about the Data Dictionary This is another tool of requirement analysis that reduces complexity of DFD. A data dictionary is a catalog of all components of a system. DFD
Q. Explain the concept of bottom-up design? Bottom up design: This approach make possible a style of design where we decide how to combine these modules to provide larger ones
Define software prototyping. Software prototyping is explained as a rapid software development for validating the requirements.
EXPLAIN THE WORKING OF CRT?
Parallel/audit testing is testing where the user reconciles the output of the latest system to the output of the present system to determine the new system performs the operations
we got the code for mobile app we need a document for that
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
Writing a report explaining all the work in detail in a professional manner and the report should include all the steps below: 1. Draw up a final Entity-Relationship model compr
Question 1 . What are the drawbacks of RAD Model Question 2 . Explain why reliability is more important than efficiency? Question 3 . What are the activities of funct
What does Validation represent? Validation shows the set of activities that ensure that the software that has been built is satisfying the customer needs.
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