</author>
     <author>
      <firstname>J.</firstname>
      <surname>Goh</surname>
     </author>
    </authorgroup>
   </biblioset>
   <biblioset relation="journal">
    <title>ERL Technical Memorandum M90/33</title>
    <publisher>
     <publishername>University  of  California</publishername>
     <address>Berkeley, California</address>
    </publisher>
    <pubdate>April, 1990</pubdate>
   </biblioset>
   </biblioentry>

   <biblioentry id="ports12">
    <biblioset relation="article">
     <title><ulink url="https://arxiv.org/pdf/1208.4179">Serializable Snapshot Isolation in PostgreSQL</ulink></title>
     <authorgroup>
      <author>
       <firstname>D.</firstname>
       <surname>Ports</surname>
      </author>
      <author>
       <firstname>K.</firstname>
       <surname>Grittner</surname>
      </author>
     </authorgroup>
    </biblioset>
    <confgroup>
     <conftitle>VLDB Conference</conftitle>
     <confdates>August 2012</confdates>
     <address>Istanbul, Turkey</address>
    </confgroup>
   </biblioentry>

   <biblioentry id="rowe87">
   <biblioset relation="article">
    <title><ulink url="https://dsf.berkeley.edu/papers/ERL-M87-13.pdf">The <productname>POSTGRES</productname>
    data model</ulink></title>
    <authorgroup>
     <author>
      <firstname>L.</firstname>
      <surname>Rowe</surname>
     </author>
     <author>
      <firstname>M.</firstname>
      <surname>Stonebraker</surname>
     </author>
    </authorgroup>
    </biblioset>
    <confgroup>
     <conftitle>VLDB Conference</conftitle>
     <confdates>Sept. 1987</confdates>
     <address>Brighton, England</address>
    </confgroup>
   </biblioentry>

   <biblioentry id="seshadri95">
   <biblioset relation="article">
    <title><ulink url="https://citeseer.ist.psu.edu/viewdoc/summary?doi=10.1.1.40.5740">Generalized
    Partial Indexes</ulink></title>
    <authorgroup>
     <author>
      <firstname>P.</firstname>
      <surname>Seshadri</surname>
     </author>
     <author>
      <firstname>A.</firstname>
      <surname>Swami</surname>
     </author>
    </authorgroup>
   </biblioset>
    <confgroup>
     <conftitle>Eleventh International Conference on Data Engineering</conftitle>
     <confdates>6&ndash;10 March 1995</confdates>
     <address>Taipeh, Taiwan</address>
    </confgroup>
    <pubsnumber>Cat. No.95CH35724</pubsnumber>
    <publisher>
     <publishername>IEEE Computer Society Press</publishername>
     <address>Los Alamitos, California</address>
    </publisher>
    <pubdate>1995</pubdate>
    <pagenums>420&ndash;7</pagenums>
   </biblioentry>

   <biblioentry id="ston86">
   <biblioset relation="article">
    <title><ulink url="https://dsf.berkeley.edu/papers/ERL-M85-95.pdf">The
    design of <productname>POSTGRES</productname></ulink></title>
    <authorgroup>
     <author>
      <firstname>M.</firstname>
      <surname>Stonebraker</surname>
     </author>
     <author>
      <firstname>L.</firstname>
      <surname>Rowe</surname>
     </author>
    </authorgroup>
   </biblioset>
    <confgroup>
     <conftitle>ACM-SIGMOD Conference on Management of Data</conftitle>
     <confdates>May 1986</confdates>
     <address>Washington, DC</address>
    </confgroup>
   </biblioentry>

   <biblioentry id="ston87a">
   <biblioset relation="article">
    <title>The design of the <productname>POSTGRES</productname> rules system</title>
    <authorgroup>
     <author>
      <firstname>M.</firstname>
      <surname>Stonebraker</surname>
     </author>
     <author>
      <firstname>E.</firstname>
      <surname>Hanson</surname>
     </author>
     <author>
      <firstname>C. H.</firstname>
      <surname>Hong</surname>
     </author>
    </authorgroup>
   </biblioset>
    <confgroup>
     <conftitle>IEEE Conference on Data Engineering</conftitle>
     <confdates>Feb. 1987</confdates>
     <address>Los Angeles, California</address>
    </confgroup>
   </biblioentry>

   <biblioentry