core-data-migration

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Why Core data needs? How to implement it?

What is the need of Core Data in iPhone development? What are the step开发者_StackOverflow社区s to implement it?[详细]

2023-01-21 10:23 分类：问答
Migrating from Dictionary to Core Data Entity

I\'ve got a data model where there is a Person entity, which has a transformable attribute which is an array of dictionaries containing information. The model is much bigger than that, this is just th[详细]

2023-01-21 05:09 分类：问答
Out of memory when migrating models

I am migrating data from one model version to another in the iPhone, but the migration causes the device to run out of memory and crash. Not to mention it takes forever on the device. I use the defaul[详细]

2023-01-05 00:33 分类：问答
Detecting a Lightweight Core Data Migration

I\'m using Core Data\'s automatic lightweight migration successfully. However, when a particular entity gets created during a migration, I\'d like to populate it with some data. O开发者_StackOverflowf[详细]

2023-01-03 08:56 分类：问答
Core Data migration of to-one relationship to to-many relationship

I have a deployed app that samples measurements from sensors (e.g., Temp °C, Pressure kPa). The user can create Experiments and collect samples. Each sample is stored as a Run, such that there is a o[详细]

2022-12-29 08:44 分类：问答
Sudo equivalent for Django user profiles

Is it possible to implement an equivalent o开发者_JS百科f sudofor Django profiles ? I\'m using the basic authentication system django.contrib.auth.[详细]

2022-12-20 18:56 分类：问答
How to split an entity in Core Data migration mapping

It seems like this should be straight forward but I have not been able to find a good example of it.I have a s开发者_如何学编程imple Core Data entity that I want to split into two separate entities.Ap[详细]

2022-12-13 22:21 分类：问答