2009年已有数据库加密技术的专利发明出现。
In 2009, there was a patent invention of database encryption technology.
今天仍然在广泛应用的关系型数据库技术，发明于上世纪70年代，它是那个年代应用系统，用户及基础设施的最佳选择。
Relational database technology, invented in the 1970s and still in widespread use today, was optimized for the applications, users and infrastructure of that era.
本发明还公开了一种语音识别查询系统，包括：录音模块、语音识别模块、数据库查询模块和语音生成模块。
The invention also discloses a speech recognition query system, which comprises a recording module, a speech recognition module, a database query module and a speech generating module.
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