hashing technique, Database Management System

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Define the basic operations of the relational algebra, Define the basic ope...

Define the basic operations of the relational algebra?     Ans: Basic operators of relational algebra are: 1. Union (∪) - Selects tuples which are in either P or Q or in bot

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What are called journaling file systems? File systems that support log disks are known as journaling file systems.

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What is a super key? A super key is a set of one or more attributes that collectively permits us to recognize uniquely an entity in the entity set.

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What is Structured Query Langauge (SQL)? SQL is a powerful set-oriented language which was formed by IBM research for the databases that adhere to the relational model. It havi

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Explain Foreign Key? Foreign Key - Let there are two relations (tables) R and S. Any candidate key of the relation R that is referred within the relation S is known as the fo

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