A Brief History of SQL, SQL was born in San Jose, California IBM' s laboratory in the SQL from here in the seventies they were originally developed in the structured query language called Structured Query Language and is often referred to as the sequel to the start of IBM, they are The DB2 family of data management system RDBMS-- relational database management system developed you can still buy today running on different platforms is the fact that the system created a SQL RDBMS it is a non-procedural language with third-generation process languages ​ ​ such as C and COBOL generated at the same time

23.SQL.21.日自学通.pdf

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