sheets Vsnapshot" /><link rel="prev" href="intro-whatis.html" title="1.  What Is PostgreSQL?" /><link rel="next" href="notation.html" title="3. Conventions" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">2. A Brief History of <span class="productname">PostgreSQL</span></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="intro-whatis.html" title="1.  What Is PostgreSQL?">P