database query system的意思|示意

According to the model proposed, a video query system is designed, users can efficiently browse and search video database by different characteristics from different layers.

利用以上模型设计了一种视频数据库查询系统，用户可以根据不同的层次特征，对视频数据库进行有效地浏览和检索。

The system has three components: the query subsystem, the database subsystem and the retrieval subsystem.

该系统分为查询界面子系统、数据库子系统和检索子系统三大部分。

Traditional database system is not only difficulty to realize the complex query system, but also inconvenient in extending other query functions.

用传统的基于数据库的应用系统难以实现复杂查询，而且可扩展性不好。

And they only appear when the database administrator runs a query profiler on your system when it has performance problems.

并且它们只有在数据库管理员在系统具有性能问题时在系统上运行查询剖析器时才会出现。

The database system based on the standard query language — SQL, makes user can easily manage and operate on the database.Users can manage the corporation better because of the database technology.

SQL结构化查询语言基础上建立的数据库系统使得用户能够对数据库进行简单的操作和管理。通过数据库技术可以让用户更好地对企业进行管理。

The paper introduces optimizing data sources to improve the performance of a OLAP system and the methods of optimizing database, aggregation and memorizing client record query.

通过优化数据源提高OLAP系统的性能，文章详细介绍了优化数据库、聚合及采用记录客户查询的方法。