SQL (Structured Query Language) is essential for interacting with relational databases, allowing users to manage and retrieve data through structured queries.
A primary key uniquely identifies each record in a table, preventing duplication while a foreign key establishes relationships between tables to maintain data integrity.
Understanding SQL commands like SELECT, INSERT, UPDATE, and DELETE is crucial for effective data management in relational database systems, providing robust capabilities for data manipulation.
Advanced SQL concepts, including using ORDER BY for sorting query results, enhance the functionality and usability of SQL for complex data retrieval tasks.
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