iPhone , core data, whether NSManagedObject use lazy load mechanism when it was create?
<p>I have use core data in app, I have definite a class that most like as follows:</p>

<pre><code>@interface Master : NSManagedObject {
</code></pre>

<p>}</p>

<p>@property (nonatomic, retain) NSSet* Details;
....</p>

<p>the entity Master contains a property 'Details' that is relate to another table, this is typical Master->Details relationship,  I trace the app , but I find a issue that the property 'Details' value was construct even it never be invoked .....</p>

<p>but I consider that the core data 'should' use some lazy mechanism to improve performance, 
or maybe I miss some configure step ? because the Master entity contains at least five 'Child' table properties , I have to consider this problem before use the core data ....</p>

<p>any help ? thanks for your time!</p>
