在下一节中，您将学习如何创建索引来加速查询。
In the next section, you will learn how to create indexes to speed up your queries.
这两个数据库系统都支持主键，以及支持加速查询和约束输入的键索引。
The two database systems support primary keys, along with key indices that allow you to speed up queries and constrain input.
在编译查询时，主机服务器将使用称为对象缓存(object cache)的特性加速查询性能。
When compiling queries, the host server USES a feature called the object cache to accelerate query performance.
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