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5 months ago
What is SQL?
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Database Processing: Fundamentals, Design, and Implementation
Edition: 15th
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Structured Query Language (SQL) is used to create, modify and use databases, tables, and relationships. SQL is divided into two categories: SQL statements for database definition and SQL statements for database processing (querying and updating). The database definition commands are referred to as a data definition language (DDL), and the database query and update commands are referred to as a data manipulation language (DML). SQL was developed by IBM, and is endorsed as a national standard by the American National Standards Institute (ANSI). Although a newer standard, SQL3, exists, the most widely implemented version of SQL is the ANSI SQL-92 standard. SQL is not a full-featured programming language, but rather a data sublanguage.
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