ass="sect1"><a href="client-authentication-problems.html">21.15. Authentication Problems</a></span></dt></dl></div><a id="id-1.6.8.2" class="indexterm"></a><p>
  When a client application connects to the database server, it
  specifies which <span class="productname">PostgreSQL</span> database user name it
  wants to connect as, much the same way one logs into a Unix computer
  as a particular user. Within the SQL environment the active database
  user name determines access privileges to database objects �