Relational Algebra   Relational algebra is a procedural query language that accepts instances of relations and returns …

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Indexes SQL indexes are specialized lookup tables that help the database search engine get data faster.  In simple word…

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Normalization The process of arranging data in a database is called normalization. It involves creating tables and inte…

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Integrity Constraints Integrity constraints are guidelines that support maintaining the consistency and correctness of …

Data Communication Data communication is the process of moving information between two or more systems, devices, or loc…

ER Model  ER Model stands for Entity-Relationship Model. A diagram is used in an entity-relationship model to show the …