title: What is the correct attribute_set_id for customer entity and customer_address entity?
body: <p>I notice a discrepancy in Magento attribute_set_id for customer_address and customer entities. In customer_address_entity and customer_entity tables, the attribute_set_id is 0. However, in eav_attribute_set table, there is no such a thing where attribute_set_id is 0.</p>
  
  <p>Supposedly, the attribute_set_id for customer entity is 1 and the attribute_set_id for customer_address entity 2. Is that correct?</p>
  
  <pre><code>attribute_set_id == 1 \\customer entity
  attribute_set_id == 2 \\customer_address entity
  </code></pre>