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In E-R diagram how generalization is represented?
in E-R diagram generalization is represented by Triangle shape.
Evaluate: a.When transactions T1 and T2 are in a deadlock, one of the transactions will eventually implement to completion and let the other one continue implementation. b.
Define Single Value and Multivalued attribute Single value attribute comprise a single atomic value for an entity and multivalued attribute may have much more than one value f
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The users who use easy-to-use menu are called ? The users who use easy to use menu are called as Naïve users.
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How does a query tree represent a relational algebra expression? Discuss any three rules for query optimisation, giving example as to when should each rule be applied. Ans
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