Datamanagement, Database Management System

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Why a report generator is used ? Report generator is used for print files on paper.

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What is an index? An index is a structure that helps to place desired records of a relation quickly, without probing all records.

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In problems 1 - 4, you are given the columns of a table, and a set of functional dependencies.  Determine the normal form of this table.  Remember that the normal form is the HIGHE

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What is a query tree?     Ans:  A query tree, as well known as operator graph, is a tree data structure that corresponds to a relational algebra expression. It denotes the inpu

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What are metrics for choosing the best algorithm? Matrices for choosing the best algorithms are as below: Computational complexity Ease of understand ability and im

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Scenario 1: Power goes out after the first instruction. What happens?

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Explain recovery process after system failure using checkpoint. Ans: Checkpoint scheme or method is an extra component of the log based recovery system. This scheme is used to

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What is a database? Database - Basically in simple terms A database is a collection of inter related data and/or information stored so which it is available to several users

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Backward Recovery (UNDO): In this system the uncommitted changes made by a transaction to a database are undone.  Instead the system is reset to the last consistent state of databa

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