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Explain about the E-R Diagram
Entity-relationship (E-R) diagram is detailed logical representation of data for an organisation. It is data oriented model of a system while DFD is a process oriented model. ER diagram represent data at rest whereas DFD tracks the motion of data.
ERD doesn't provide any information regarding functionality of data. It has 3 main components - data entities, their relationships and their associated attributes.
"Utility" is a software tool designed to perform some regularly used support function. For example, single utility is a program to print files.
What is meant by Data dictionary? The Data dictionary is an organized listing of all data constituents that are related to the system, with precise, accurate definitions so tha
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What is software engineering? Software engineering is a regulation in which theories, methods and tools are applied to make professional software.
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1.1 Discuss possible ramifications of these opposing objectives on the project. What would you do if you were the manager?
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