A Level Computer Science OCR Practice Exam

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What defines a relational database?

Multiple tables that have no relationships
A single table with flat data
Multiple tables that a user can find relationships between and find specific information
A spreadsheet-like structure with no defined records

The correct answer is: Multiple tables that a user can find relationships between and find specific information

A relational database is defined by its use of multiple tables that are related to one another, allowing users to efficiently organize, retrieve, and manipulate data. In a relational database, data is structured into tables (or relations), and these tables are interconnected through relationships defined by key attributes, usually primary keys and foreign keys. This setup enables complex queries and the ability to extract specific information spanning multiple tables, which is essential for maintaining data integrity and avoiding redundancy. The ability to find relationships among various tables is a fundamental aspect of relational databases. By linking data stored in different tables, users can carry out sophisticated queries to derive insights and establish connections between disparate pieces of information. This is crucial for applications that require access to large volumes of interrelated data, making relational databases powerful tools for data management.