normalisation, Database Management System

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If R1 and R2 are two union compatible relations or functions, then the result of R3 = R1 ∩R2 is the relation that contains all tuples that are in both the relations In other words,

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Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

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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

a project based on normalization with first, second and third normalization. There need to be a diagram also

Consider the subsequent relation   Professor (Pfcode, dept, head, time)   It is assumed that      (i) A professor can work in much more than one

ALTER TABLE Command : This command is used for variation of existing structure of the table in the given situation: When a new column is to be added to the table structure.

brief history,definition,current trends and future trends if any of data fragmentation