It enables developers to query and manipulate data using a conceptual model instead of a physical storage model.
它支持开发人员使用概念模型查询和操作数据，而无需使用物理存储模型。
2
An additional benefit is that developers can work with a consistent conceptual model across multiple storage engines.
一个附带的好处是，开发人员可以在一个稳定的概念模型上进行工作，即使跨越多个数据引擎。
3
This allows developers to focus on the conceptual model without concern for the storage schema, and allows them to write code with efficiency and maintainability in mind.