哪些是最值得注意的事情，使核心数据不同于MySQL？ [英] Which are the most noteable things which make working with Core Data different than with MySQL?

问题描述

我想到的一件事是，Core Data中的数据集（或者说：托管对象）没有其他数据库（如MySQL）知道的ID。

与使用MySQL这样的关系数据库相比，Core Data更加特别吗？除了整个对象图表持久化和ORM的东西？

解决方案

这是一篇很好的文章，解释了主要的区别。对我来说最大的是

Core Data无法对数据
进行操作，而无需将数据加载到内存中

这使得核心数据和MySQL适合完全不同的任务。

One thing I have in mind is, that datasets in Core Data (or lets say: managed objects) have no ID like known from other databases such as MySQL. Also, they're not in a specific guaranteed order.

What else makes Core Data much more "special" compared to working with a relational database like MySQL? Besides the whole object graph persisting and ORM stuff?

解决方案

This is a good article explaining the main differences. The biggy for me is

'Core Data cannot operate on data without loading the data into memory'

This alone makes core-data and MySQL suited to totally different tasks.

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