On the condition of limited application range, we proposed a method for mapping the natural language to SQL query language, which is based on the pattern recognition.

在应用范围受限的条件下，提出了主要以自然语言中的关键词构造模式库来映射查询语句的思想方法；

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The basic optimization methods of the SQL query language is presented by comprehending executive tactics of RDBMS optimizer and analyzing the factors that affect the SQL query language efficiency.

通过了解rdbms优化器的执行策略，并分析了影响SQL查询语句效率的因素，提出了SQL查询语句的基本优化方法，充分利用这些方法能提高SQL查询语句的执行效率。

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The basic optimization methods of the SQL query language is presented by comprehending executive tactics of RDBMS optimizer and analyzing the factors that affect the SQL query languages efficiency.

介绍RDBMS优化器的执行策略和分析了影响SQL查询效率的因素的基础上，提出了优化SQL查询效率的基本方法，以提高数据库查询的执行效率。

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

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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.

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To build the bridge between SQL and MapReduce, Aster has created three keyword extensions to SQL, which allow users to extend queries through a modeling capability that simplifies the necessary language for creating a MapReduce query.

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