结构化查询语言。一种用于查询和修改关系数据库的标准语言。

Structured query language. A standard language for querying and modifying relational databases.

youdao

SQL是一种结构化的查询语言，已成为关系数据库的国际标准语言。

SQL, which is a structured query language, has been an international standard language of relational database. This paper shows the corresponding relations between algebra of relations and SQL.

youdao

SQL是一种结构化的查询语言，已成为关系数据库的国际标准语言。

SQL, which is a structured query language, has been an international standard language of relational database. This paper shows the corresponding relations between algebra of relations and SQL.

youdao