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The success of a system relies on the approach of building it. If development approach is right then system will work successfully. Figure below portrays a System Development Life Cycle. System development life cycle (SDLC) is a standard methodology for development of Information System. It principally comprises four phases: System Analysis, System Design, System Construction & Implementation and System Support. Each phase comprises inputs, tasks and outputs. Traditional SDLC was strictly sequential. Developers first complete the previous phase then start the subsequent phase. Though now concept of Repository is introduced in SDLC and it is termed as FAST methodology where work is done across shared repository. It means that all inputs and outputs of phases should be stored in the repository. At any instance developers can backtrack to preceding phase and they may also work on two phases concurrently.
Figure: System Development Life Cycle
What is a screen group? How it is useful? Screen group is a field in the Screen Attributes of a screen. Here we can explain a string of up to four characters which is availa
Steps in Building the Structure Chart 1. Recognize top level modules and decompose them into lower levels 2. Add control connections 3. Add couples 4. Review and revis
What are base tables of an aggregate object? The tables making up an aggregate object (primary and secondary) are known as aggregate object.
The Process of Development The approach to development can be an iterative one. It involves repeated refinement of the object model. The process needs to be controlled by an a
Using Module-Instance Parameter: Parameter values can be overridden while a module is instantiated. New parameter values are passed at the time of module instantiation. Top-
The advantages of specifying parameters during instantiation method are: - All values to all the parameters do not need to be specified. Only those parameters that are assigne
Q. Amdahl Law to measure speed up performance? Remember that speed up factor assists us in knowing relative gain attained in shifting execution of a task from sequential comput
Fetching a word from memory: CPU transfers the address of the needed information word to the memory address register (MAR). Address of the needed word is transferred to the pr
Q. Explain about Deadlock Avoidance? To prevent deadlocks two kinds of techniques are used: 1) Static prevention: It employs P and V operators in addition to Semaphores to
Non-Uniform Memory Access Model (NUMA) In shared memory multiprocessor systems, local memories are able to be connected with every processor. The collection of all local
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