java - 该怎么理解"数据访问层是以持久化技术无关的方式进行访问的?"

Question

我在spring in action的数据访问那一章看到了这句话.

数据访问层 不就是负责对数据库的访问吗, 也就是维护数据, 进行增删改查; 为什么说它与持久化技术无关呢?

Answer 1

The original text is:

In addition, the data-access tier is accessed in a persistence-agnostic manner.

This sentence is difficult to translate because the usage of xxx-agnostic is relatively common in English (especially in technical literature), but there is no particularly appropriate fixed usage in Chinese.

agnostic It means "agnosticism", but it is not accurate; in this context, the most accurate understanding is "it doesn't matter what it is" or "it doesn't matter what it is", which means that any method can be used to achieve the goal , and is not limited to a specific method.

So the accurate translation of this sentence can be:

In addition, the way to access the data layer is not limited to specific persistence technologies.

Although this breaks the passive voice characteristic of the original sentence, translation is not just about literal comparison, but also requires accuracy and conformity to the writing habits of the target language.

"In a persistence technology-independent manner" was originally intended to express the meaning of "agnosticism", but the word "unrelated" in English corresponds to unrelated instead of unrelated 而不是 agnostic. There are many Chinese translations Articles all make mistakes here, which is very common.

So I encourage technical people to read the original text. It may seem slow, but it is actually fast.

Answer 2

Persistence should be data connection, data access is a type of operation. I don’t know if this distinction is correct

Answer 3

Data persistence, in the final analysis, the data is written to the disk. When a failure occurs, it can be read somewhere without losing it