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SQL (Structured Query Language) is a standard language used to access and manipulate databases. It enables you to run queries to retrieve data and to perform common data operations such as inserting, updating, and deleting records. SQL can also manage database structures by creating databases and tables, defining views, and setting permissions. Although SQL is standardized by ANSI (1986) and ISO (1987), different database systems implement different SQL “versions” and may add proprietary extensions. To use SQL effectively, you typically work with an RDBMS (Relational Database Management System), which stores data in tables made up of columns (vertical attributes) and rows/records (individual entries).
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