e r diagram, Database Management System

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how to make an e r diagram?

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What is nested relational model? The nested relational model is an extension of relational model in which domains might be either atomic or relation valued.

Set difference, Set Difference If R1 and R2 are two union compatible re...

Set Difference If R1 and R2 are two union compatible relations or relations then result of R3 =R1- R2 is the relation that have only those tuples that are in R1 but not in R2.

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Mention the various user privileges All privileges directly granted to the user or role. All privileges granted to roles that have been granted to the user or role.

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Reflects organisational structure: Many organizations are distributed over various locations. If an organisation has many offices in dissimilar cities, databases used in such an ap

Weak entity, An example of a weak entity is Staff because the availabilityI...

An example of a weak entity is Staff because the availabilityID cannot be uniquely identified unless it is used in conjunction with the foreign key known as availabilityID in the A

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