queries, Database Management System

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Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))

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BCNF Boyce-Codd Normal Form A relation schema R is in BCNF if it is in 3NF and accepts an additional constraint that for every FD X A, X has to be a candidate key. If a relati

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Write short notes on Schema diagram.  A database schema along with primary key and foreign key dependencies can be depicted pictorially by schema  diagram. Every relation appea

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What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys

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Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi

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