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Core Data modeling question

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Core Data modeling question

Subject: Core Data modeling question
From: Markus Schneider <email@hidden>
Date: Wed, 26 Nov 2008 22:08:50 +0100

Hi All,

I have started using CoreData and have a modeling question.

My model has a managed object "TASK", which shall be executed each day during a time period.

Therefore, I have added a startDate and an endDate as attributes:

	TASK
		- startDate
		- endDate

Now in this time period there are exceptions, when the task shall not be executed (e.g. holidays etc)

	TASK
		- startDate
		- endDate

		- exceptions
				- day1
				- day2
				- day3

I thought on having a list of date objects containing the exceptions. But how should I model this? I cannot create a NSMutableArray to store the dates in the persistent store. Shall I use a MO class "DAY" and model the list as a to-many relationship?

	TASK
		- startDate
		- endDate

		- exceptions  ------------->  DAY
								  - date

Is this really necessary or is there a  more elegant way?

Any help/advice  appreciated.

Thanks,

Markus
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