eToOne.html#mappedBy--">mappedBy</a></span></code>
<div class="block">(Optional) The field that owns the relationship.</div>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/persistence/OneToOne.html#optional--">optional</a></span></code>
<div class="block">(Optional) Whether the association is optional.</div>
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<td class="colFirst"><code>boolean</code></td>
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