arangosh&gt; db.example.save({ <span class="hljs-attr">Hello</span> : <span class="hljs-string">"world"</span> });
{ 
  <span class="hljs-string">"_id"</span> : <span class="hljs-string">"example/6579"</span>, 
  <span class="hljs-string">"_key"</span> : <span class="hljs-string">"6579"</span>, 
  <span class="hljs-string">"_rev"</span> : <span class="hljs-string">"_VRepw9W---"</span> 
}
arangosh&gt; db.example.replaceByExample({ <span class="hljs-attr">Hello</span>: <span class="hljs-string">"world"</span> }, {<span class="hljs-attr">Hello</span>: <span class="hljs-string">"mars"</span>}, <span class="hljs-literal">false</span>, <span class="hljs-number">5</span>);
<span class="hljs-number">1</span>