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Q. Structured Analysis and Design Approach?
The objective of structured system analysis and design is to reduce maintenance time as well as effort. Modeling is the act of drawing one or more graphical representations of a System. Model driven development techniques lay emphasis on the drawing of models to help visualize and analyse problems, design Information systems and define business requirements. The first model driven scheme is Structured Analysis and Design approach.
Structured Analysis is a development method for analysis of existing automated systems or manual systems, leading to development of specifications (expected behaviour orfunctionality) for proposed system. The aim of structured analysis scheme is to organize the tasks associated with requirement determination to provide a complete and accurate understanding of a current situation. The primary tasks of structured system analysis scheme are:
It is a process-centred approach which is used to model business requirements for a system. Structured analysis introduced a process-modeling tool known as the Data flow diagram used to illustrate business process requirements. With the help of DFD systems analyst can show the system overview. Data modeling tools like Entity relationship diagrams are used to explain business data requirements. With the help of ER diagram analyst can show database overview.
Throughput of a system is? Ans. "Throughput" of a system is no. of programs processed by this per unit time.
Program Level This is normally the liability of OS (operating system) that runs processes simultaneously. Different programs are generally independent of each other. So paralle
Q. What is Shadow Mask? Shadow Mask is a metal sheet that has fine perforations (holes) in it and is situated a short distance before phosphor coated screen. The Phosphor dots
What is system testing? The final step in testing is system testing, which means checking the whole application. System testing exercises the overall application and make sure
Define memory access time? The time needed to access one word is known as the memory access time. Or It is the time that elapses among the initiation of an operation and the co
n=(x*2)/(1=0) the value x=0 and is used to stop the algerithin.The calculation is repeated using values of x=0 is input. There is only a need to check for error positions. The va
Recognition of basic syntactic constructs through reductions, this task is performed by? By Syntax analysis, recognition of fundamental syntactic constructs through reductions
Asymptotic Notations These notations are used for evaluating functions. Assume we have two functions f(n) and g(n) defined on real numbers, Theta Notation Big Notation
Which operations is performed more efficiently by doubly linked list than by singly linked list Deleting a node whose location is given.
why we say OS is a resource allocator and control program
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