title: How can I see each of tables from database in R?
body: <p>For example, under "nycflights13" database, there are many tables including flights and weather, etc.</p>
  
  <pre><code>library(nycflights13)
  </code></pre>
  
  <p>After writing above, how I can see about actual information of the tables like table names, structures in case of that I don't know any table names.</p>
  
  <p><code>head(nycflights13)</code> or <code>str(nycflights13)</code> do not work.</p>