inheritance, Database Management System

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what is relationship inheritance and attribute inheritance

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Describe the two types of methods for retrieving rows in Python? Fetchone()- Returns the next row as a sequence Fetch all()- Returns the entire result set like a strin

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Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.

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Hot Backup: Some sites cannot terminate the database while creating a backup copy of the files. The cold backup is not a reliable option. So different kinds of backing up database

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What is property - properties of a database ? It is an integrated collection of logically related records. It consolidates separate files into a common pool of data records and

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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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Isolation or Independence : The isolation property shows that the updates of a transaction should not be visible till they are committed. Isolation assurance that the progresses of

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