NET has constructed the school information management system, introduced the system overall design. The database access method and the data security guard measure.
NET构建了学校信息管理系统，本文介绍了系统的整体设计，数据库访问方法和数据安全防范措施。
Using this method, a connection is created each time you access the database from your program, thereby incurring a substantial processing overhead.
通过该方法，每当您从程序访问数据库时，都要创建连接，从而招致大量的处理开销。
Once the driver is registered, you can access and retrieve collections by invoking the getCollection method and providing it the database URI as follows
一旦注册了驱动程序，通过调用 getCollection 方法并提供如下所示的数据库 URI，您就可以访问并检索集合
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