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 <volume>22</volume>
 <number>4</number>
 <month>December</month>
 <year>1993</year>
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          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Segev93b.html">
          	<title articleCode="390033">Editor's Notes.</title>
          </toArticle>
 <initPage>2</initPage>
 <endPage>2</endPage>
          <authors>
 <author AuthorPosition="00">Arie Segev</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Kim93b.html">
          	<title articleCode="219034">Chair's Message.</title>
          </toArticle>
 <initPage>3</initPage>
 <endPage>3</endPage>
          <authors>
 <author AuthorPosition="00">Won Kim</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Winslett93b.html">
          	<title articleCode="929035">Update on SIGMOD On-Line Services.</title>
          </toArticle>
 <initPage>4</initPage>
 <endPage>4</endPage>
          <authors>
 <author AuthorPosition="00">Marianne Winslett</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/ScholermanMTTZ93.html">
          	<title articleCode="674036">Relational Database Integration in the IBM AS/400.</title>
          </toArticle>
 <initPage>5</initPage>
 <endPage>10</endPage>
          <authors>
 <author AuthorPosition="00">S. Scholerman</author>
 <author AuthorPosition="01">L. Miller</author>
 <author AuthorPosition="02">J. Tenner</author>
 <author AuthorPosition="03">S. Tomanek</author>
 <author AuthorPosition="04">M. Zolliker</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/ArpinarDE93.html">
          	<title articleCode="572037">MoodView: An Advanced Graphical User Interface for OODBMSs.</title>
          </toArticle>
 <initPage>11</initPage>
 <endPage>18</endPage>
          <authors>
 <author AuthorPosition="00">Ismailcem Budak Arpinar</author>
 <author AuthorPosition="01">Asuman Dogac</author>
 <author AuthorPosition="02">Cem Evrendilek</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Wiil93.html">
          	<title articleCode="433038">Experiences with HyperBase: A Hypertext Database Supporting Collaborative Work.</title>
          </toArticle>
 <initPage>19</initPage>
 <endPage>25</endPage>
          <authors>
 <author AuthorPosition="00">Uffe Kock Wiil</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/LevenePBST93.html">
          	<title articleCode="488039">Implementation of a Graph-Based Data Model for Complex Objects.</title>
          </toArticle>
 <initPage>26</initPage>
 <endPage>31</endPage>
          <authors>
 <author AuthorPosition="00">Mark Levene</author>
 <author AuthorPosition="01">Alexandra Poulovassilis</author>
 <author AuthorPosition="02">Kerima Benkerimi</author>
 <author AuthorPosition="03">Sara Schwartz</author>
 <author AuthorPosition="04">Eran Tuv</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Rahm93.html">
          	<title articleCode="641040">Parallel Query Processing in Shared Disk Database Systems.</title>
          </toArticle>
 <initPage>32</initPage>
 <endPage>37</endPage>
          <authors>
 <author AuthorPosition="00">Erhard Rahm</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/GruenwaldL93.html">
          	<title articleCode="39041">A Performance Study of Concurrency Control in a Real-Time Main Memory Database System.</title>
          </toArticle>
 <initPage>38</initPage>
 <endPage>44</endPage>
          <authors>
 <author AuthorPosition="00">Le Gruenwald</author>
 <author AuthorPosition="01">Sichen Liu</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/NyanchamaO93.html">
          	<title articleCode="740042">Role-Based Security, Object Oriented Databases &amp; Separation of Duty.</title>
          </toArticle>
 <initPage>45</initPage>
 <endPage>51</endPage>
          <authors>
 <author AuthorPosition="00">Matunda Nyanchama</author>
 <author AuthorPosition="01">Sylvia L. Osborn</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/ThuraisinghamK93.html">
          	<title articleCode="250043">Concurrency Control in Trusted Database Management Systems: A Survey.</title>
          </toArticle>
 <initPage>52</initPage>
 <endPage>59</endPage>
          <authors>
 <author AuthorPosition="00">Bhavani M. Thuraisingham</author>
 <author AuthorPosition="01">Hai-Ping Ko</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/LuCW93.html">
          	<title articleCode="58044">A Survey on Usage of SQL.</title>
          </toArticle>
 <initPage>60</initPage>
 <endPage>65</endPage>
          <authors>
 <author AuthorPosition="00">Hongjun Lu</author>
 <author AuthorPosition="01">Hock Chuan Chan</author>
 <author AuthorPosition="02">Kwok Kee Wei</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Kline93.html">
          	<title articleCode="112045">An Update of the Temporal Database Bibliography.</title>
          </toArticle>
 <initPage>66</initPage>
 <endPage>80</endPage>
          <authors>
 <author AuthorPosition="00">Nick Kline</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/MaierDPWGS93.html">
          	<title articleCode="314046">Database Research at the Data-Intensive Systems Center.</title>
          </toArticle>
 <initPage>81</initPage>
 <endPage>86</endPage>
          <authors>
 <author AuthorPosition="00">David Maier</author>
 <author AuthorPosition="01">Lois M. L. Delcambre</author>
 <author AuthorPosition="02">Calton Pu</author>
 <author AuthorPosition="03">Jonathan Walpole</author>
 <author AuthorPosition="04">Goetz Graefe</author>
 <author AuthorPosition="05">Leonard D. Shapiro</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/X93b.html">
          	<title articleCode="321047">Database Research at the University of Twente.</title>
          </toArticle>
 <initPage>87</initPage>
 <endPage>91</endPage>
          <authors>
 <author AuthorPosition="00">Leonard D. Shapiro</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/Winslett93c.html">
          	<title articleCode="606048">NSF and HPCC Under Attack.</title>
          </toArticle>
 <initPage>92</initPage>
 <endPage>95</endPage>
          <authors>
 <author AuthorPosition="00">Marianne Winslett</author>
          </authors>
     </articlesTuple>

     <articlesTuple>
          <toArticle href="http://www.informatik.uni-trier.de/~ley/db/journals/sigmod/X93d.html">
          	<title articleCode="185049">Calls for Papers.</title>
          </toArticle>
 <initPage>96</initPage>
 <endPage>104</endPage>
          <authors>
 <author AuthorPosition="00">Marianne Winslett</author>
          </authors>
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