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Next: <a href="EOModelGroup-class.html#EOModelGroup-class" accesskey="n" rel="next">EOModelGroup class</a>, Previous: <a href="EOAttribute-class.html#EOAttribute-class" accesskey="p" rel="prev">EOAttribute class</a>, Up: <a href="Classes.html#Classes" accesskey="u" rel="up">Classes</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html#Index" title="Index" rel="index">Index</a>]</p>
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<h2 class="chapter">16 EORelationship class</h2>
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<h3 class="section">16.1 overview</h3>
<p>A relationship represents a connecton between entities and are described
with EOJoin’s. A join defines source and destination attributes – The
attributes of the joining entity which must match.
</p>
<p>A relationship may be of type to-one or to-many. In a to-many the
destination will be an array of objects, and a to-one relationships
destination a single object.
</p>
<p>Typically a relationship is a class property. Yet some relationships may
soley be used for flattening other relationships which are class properties,
yet need not be class properties themselves.
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