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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.
What does Validation represent? Validation shows the set of activities that ensure that the software that has been built is satisfying the customer needs.
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Software life cycle starts when a software product is first conceived and ends when it is no longer in use. It contains aspects such as initial concept, requirements analysis, inte
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Define the Minimum cardinality of a relationship Minimum cardinality of a relationship is the minimum number of instances of second entity (student, in this case) with every in
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