As a single entry point to all enterprise data stores, the implementation of a data service layer has many benefits.

作为所有企业数据存储的单一入口点，实现数据服务层的好处很多。

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But the question is how can we design this Data Service Layer? Fred sees 3 different possibilities.

但是问题是，我们如何设计这个数据服务层？

youdao

But the question is how can we design this Data Service Layer? Fred sees 3 different possibilities.

但是问题是，我们如何设计这个数据服务层？

youdao