Entity Integrity is a fundamental principle in relational database design that ensures each table has a primary key, which uniquely identifies each row and prevents duplicate records. This principle is crucial for maintaining accurate and reliable data retrieval and manipulation within the database system.

Entity Integrity

Relational database design is the process of structuring a database in accordance with a series of principles to ensure data integrity, efficiency, and scalability. It involves organizing data into tables, defining relationships between them, and applying normalization techniques to minimize redundancy and dependency.

relational database design

A primary key is a unique identifier for a record in a database table, ensuring that each entry is distinct and easily retrievable. It is essential for maintaining data integrity and establishing relationships between tables in a relational database management system.

primary key

uniquely identifies

duplicate records

Accurate data retrieval

reliable data retrieval

Data manipulation involves the process of adjusting, organizing, and transforming data to make it more useful and insightful for analysis. It is a crucial step in data analysis that ensures data quality, accuracy, and relevance, enabling more effective decision-making and data-driven insights.

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