很多刚起步的项目都在尝试处理数据存储和持久化， 但还没有最佳解决方案。

There is a wide array of embryonic projects attempting to deal with datastores and persistence, but no obvious best solution.

youdao

对象关系映射是使用遗留模式(可能定义时没有考虑对象模型)时的最佳解决方案。

Object-relational mapping is the best solution when you have a legacy schema, perhaps not defined with an object model in mind.

youdao