ur
        primary entries (in the United States, the automobile's VIN would be
        ideal for this purpose). You would then create a 
            
            <span>structure</span>
        that identifies
        all the characteristics of the automobiles in your inventory. 
        
        
    </p>
      <p>
        To query this data, you might then create multiple secondary databases,
        one for each of the characteristics that you want to query. For
        example, you might create a second