Management and use of database, Database Management System

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Database, . Ashutosh Dubey who is the director of Gyan Gurukul want a three...

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Partial Key : It is a group of attributes that can uniquely identify small entities and that are related to same base entity. It is sometime named as Discriminator.  Altern

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Law Associates is a large legal practice based in Sydney.  You have been asked to design a data model for the practice based upon the following specification: The practice emplo

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What are the types of storage devices? Primary storage Secondary storage Tertiary storage Volatile storage Nonvolatile storage

Attributes and tuple, Before we talk about the relational model in more det...

Before we talk about the relational model in more detail, let us first define some very basic terms used in this model. Tuple Every row in a table shows a record and is cal

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What is DDL? Make a list of commands with short description used in DDL Ans: Data Definition Language that is abbreviated as DDL is a computer language for defining data struct

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First Normal Form and second normal form First Normal Form (1NF) A relation is said to be in 1NF if it having no non-atomic values and each row can give a unique combinat

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