YQL is basically a query language based on SQL that lets you query and retrieve structured data from multiple services in a standard way.
YQL基本上就是一种基于SQL的查询语言，允许以标准的方式从多个服务中查询和检索结构化数据。
This paper puts forward an information retrieval system based on XML documents database on the foundation of segmentation technology, index technology and structured query language technology.
在分词技术、索引技术、结构化查询语言技术的基础上，提出了一个基于XML文档数据库的信息检索系统，这一系统模型主要由分词模块、索引模块及查询模块组成。
The general reasoning engine, consisting of Structured Query Language (SQL) based on set theory and techniques of DB, was put forward.
提出通用型推理引擎建立的基本原理，为基于数据库的SQL语句。
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