Logic programming language HPROLOG is a prolog-like language. It is mainly a deductive database query language.

逻辑程序设计语言hprolog是一种类prolog语言，它将主要作为一种推理数据库的查询语言。

youdao

Traditional relational database query language SQL is designed for relational tables, and not suitable for XML or GML semistructured data;

传统的关系数据库查询语言SQL是针对平面的二维关系数据而设计的，并不适合XML/GML半结构化数据的查询；

youdao

It provides the ability to do visual analysis of the data with a drag-and-drop interface, and it can also use the familiar SQL database language to query data.

它允许通过拖放界面进行数据的可视分析，也可以使用熟悉的SQL数据库语言查询数据。

youdao

By entering certain strings of text into user input boxes on Web sites, cybercriminals are able to confuse their commands with data in a site's Structured Query Language (SQL) database and gain control of it, says Grossman.

FORBES: Google-Hacking Goes To China

This traditional database platforms, known as relational database management systems (RDBMS) all use a language called SQL (structured query language).

FORBES: Combating the Big Data skills shortage