title: RKI_COVID19/FeatureServer - how to use that?
body: <p>I am looking for a rest way to get more information out of a COVID19 map.</p>
  
  <p>I noticed that arcgis provides plenty of topics and tutorials for developers.</p>
  
  <p>I just don't know which tutorials are helping me to understand the FeatureServer.</p>
  
  <p>I had two questions, can I query the below table with the rest api?</p>
  
  <p>Like finding out what fields are in it, and what data.</p>
  
  <p>If I have access to a serviceItemId - can I do anything useful with it?</p>
  
  <pre><code> "tables" : [
      {
        "id" : 0,
        "name" : "RKI_COVID19",
        "parentLayerId" : -1,
        "defaultVisibility" : true,
        "subLayerIds" : null,
        "minScale" : 0,
        "maxScale" : 0
      }
    ]
  </code></pre>