E-r model uses this symbol to represent weak entity set, Database Management System

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E-R model uses this symbol to represent weak entity set ?

A Doubly outlined rectangle symbol is used to represent weak entity set.

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What is relational model feature? A relational model feature is much more data independence than some other database models.

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The External or View Level The external or view level is the highest level of abstraction of database. It gives a window on the conceptual view, which permits the user to see

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Explain Transaction manager and their work? Transaction Manager: Ensure the database remains in a constant (correct) state despite system failure, and in which concurrent trans

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