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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.
System software
what is halstead software science measures
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give the example of data dictionary
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Maintain you are involved in a large project concerning the development of a patient management system for a hospital. You may opt for one of two plans. The first plan is to start
What is the Legacy Challenge in Software Engineering?
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