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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.
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effects of nativity in requirements specification
Question: (a) Differentiate between circuit switching and packet switching. (b) Using an example, explain the main parts that form a URL (Uniform Resource Locator). (c)
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what is concurrency?
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explain levels of transparency
State Entity /Relationship diagram. ERD depicts relationships among data objects. The ERD is the notation that is used to conduct the data modeling activity. The primary
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