1. Describe the concept of the logical equivalent as it relates to defining the
ID: 3722943 • Letter: 1
Question
1. Describe the concept of the logical equivalent as it relates to defining the requirements of a system
2. What is the purpose of functional decomposition? How is the leveling of a DFD consistent with this concept?
3. What is a legacy system?
4. Processes and data represent the two components of any software application. Explain the alternative approaches to obtaining process and data information from a legacy system.
5. What is reverse engineering? How can it be used to build a new system?
6. Why is analysis version control important?
7. Explain the procedures for developing a DFD from an existing program.
8. What is the purpose of a process specification? Explain.
9. Outline the differences between a business specification and a programming specification. What is their relationship, if any?
Explanation / Answer
3. What is a legacy system?
its a law where the procedure or process jas been onterpreted or enforced is called as legacy sytsem, where the rights and responsibilities has been elaborated by different ways. The major legal systems are
5. What is reverse engineering? How can it be used to build a new system?
By examining the detailed explanation of the construction of other's product which are manufactured completely, then the process of reproduction is to be done with it is refered as reverse engineering.
6. Why is analysis version control important?
It is very important for the electronic documents, which mainly undergoes redrafting and the revision process because by the different number of users it can be changed very easily and also it might not be apparent immediately.
7. Explain the procedures for developing a DFD from an existing program.
Process - It should have atleast one input and one output
Data store - It should have one data flow in and one data flow out atleast. It should be gone through the process
Every process must goto another process or data store or database.
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