The database system based on the standard querylanguage — SQL, makes user can easily manage and operate on the database.Users can manage the corporation better because of the database technology.
In a relational language, such a query would require a join that might span several data tables and system catalog tables.
而在关系语言中,这种查询需要进行也许跨越了多个数据表和系统目录表的联接。
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Using NLU technology in the database querysystem and designing NLQID (natural languagequery interface of database) has become one of the most hopeful applied fields in the research on NLU.