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arangosh&gt; db.examples.ensureIndex({ type: <span class="hljs-string">"cap"</span>, size: <span class="hljs-number">10</span> });
{
<span class="hljs-string">"byteSize"</span> : <span class="hljs-number">0</span>,
<span class="hljs-string">"id"</span> : <span class="hljs-string">"examples/289754696"</span>,
<span class="hljs-string">"size"</span> : <span class="hljs-number">10</span>,
<span class="hljs-string">"type"</span> : <span class="hljs-string">"cap"</span>,
<span class="hljs-string">"unique"</span> : <span class="hljs-literal">false</span>,
<span class="hljs-string">"isNewlyCreated"</span> : <span class="hljs-literal">true</span>,
<span class="hljs-string">"code"</span> : <span class="hljs-number">201</span>
}
arangosh&gt; <span class="hljs-keyword">for</span> (<span class="hljs-keyword">var</span> i = <span class="hljs-number">0</span>; i &lt; <span class="hljs-number">20</span>; ++i) { <span class="hljs-keyword">var</span> d = db.examples.save( { n : i } ); }
arangosh&gt; db.examples.count();
<span class="hljs-number">10</span>