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。
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；
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；
应用推荐