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What is Notes For SQL about?

SQL is a database language used for managing data in relational databases, primarily through commands like SELECT, INSERT, UPDATE, and DELETE. The document discusses the differences between imperative and declarative programming, the problems of file processing systems, and various database models including hierarchical, network, relational, object-oriented, and NoSQL. It also explains key concepts in RDBMS such as tables, attributes, primary keys, and foreign keys, emphasizing their roles in data organizat

Author

siramab630

Language

EN