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Q. What is the use of a data flow diagram? Explain the important concepts of data flow diagram.
Ans. A data flow diagram is utilized to show the functional view of an application domain. It illustrates all the important business processes and the flow of data between those processes. The major concepts used are:
(i) A process represents some type of transformation on data. It receives as input one or more inputs and after doing necessary processing generates the output. It is symbolized by a circle with the name written inside as shown
(ii) Data Flow: A data flow symbolizes data in motion and is represented by an arrow. The data flows symbolize the flow of data among stores, processes and external agents.
(iii) Data Store: A data store symbolizes the data at rest. At the time of functioning it is represented by data base or files. Graphically I am shown as in figure.
(iv) External Agent: An external mediator represents a person a system or any other software which interacts with the system by providing necessary inputs and outputs. Graphically it is symbolized by a rectangle.
(b) Depict a context diagram for a Library management system.
Problem 1. Explain different roles of the software development? 2. What is conflict management? Explain various causes for conflict 3. What is COCOMO? Explain COCOMO mode
A group process that takes large quantity of language data, like as a list developed by brainstorming, and separates it into categories.
What are the types of software maintenance? Corrective maintenance - Means the maintenance for correcting the software faults. Adaptive maintenance - Means maintenance f
public static void mergesort(int x[],int y[])
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Q. Facilitated Application Specification Technique? A team oriented approach is developed for needs gathering and is called facilitated application specification Techniques FAS
Justify the term "Software is engineered" Software is engineered not manufactured. Although some similarities exit among software development and hardware manufacture, the two
Incremental analysis happens when (partial) analysis may be performed on an incomplete product to permit early feedback on the development of that product.
What are the aims of Analysis modelling? i. To make apparent what the customer wants. ii. To set up a basis for the creation of software design. iii. To devise a set of v
1. McM Cog is a supplier of industrial parts. Most orders are received at a call center. The call center currently has 10 phone lines total, i.e., a maximum of 10 callers may b
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