relational model

What Is Relational Model Write About Relational Keys?

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What Is Relational Model Write About Relational Keys? Relational Model (RM) represents the database as a collection of relations. A relation is nothing but a table of values. Every row in the table represents a collection of related data values. These rows in the table denote a real-world entity or relationship. What are the features

What Is Relational Algebra Explain With Example?

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What Is Relational Algebra Explain With Example? Relational algebra is a procedural query language, which takes instances of relations as input and yields instances of relations as output. It uses operators to perform queries. An operator can be either unary or binary. They accept relations as their input and yield relations as their output. What