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What is SQL2: Data Definition and Queries Guide about?

This document provides an overview of SQL, detailing its evolution from IBM SEQUEL to ANSI and ISO standards, including SQL2 features such as data definition, constraints, and schema changes. It explains the structure of SQL commands for creating tables, defining attributes and constraints, and managing schemas, alongside examples of SQL queries. Additionally, it covers basic SQL query structures and the use of various data types and constraints in SQL databases.

Author

nikhilvastrad1234

Language

EN