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      <record key="001" att1="001" value="LIB903623109" att2="LIB903623109">001   LIB903623109</record>
      <field key="037" subkey="x">englisch</field>
      <field key="050" subkey="x">Buch</field>
      <field key="076" subkey="">EDV</field>
      <field key="100" subkey="">date, c.j.</field>
      <field key="331" subkey="">an introduction to database systems</field>
      <field key="403" subkey="">2. pr.</field>
      <field key="410" subkey="">readings, massachusetts, menlo park, california, london</field>
      <field key="412" subkey="">addison-wesley publishing company</field>
      <field key="425" subkey="">1976, january</field>
      <field key="433" subkey="">xvii, 366 pp.</field>
      <field key="451" subkey="">the systems programming series</field>
      <field key="451" subkey="i">ibm editorial board (ed.)</field>
      <field key="517" subkey="c">from the table of contents: foreword; preface; database system architecture: basic concepts; storage structures; data models and</field>
      <field key="dat" subkey="a">sublanguages; the relational approach: a data sublanguage based on relational calculus; a data sublanguage based</field>
      <field key="onr" subkey="e">lational algebra; normalization; the data submodel; some relational systems; the hierarchical approach: the architecture of</field>
      <field key="an" subkey="i">ms system; the ims data model; the ims data submodel; the ims data sublanguage; ims storage structures; the ims data model</field>
      <field key="(co" subkey="n">tinued); the network approach: the architecture of a dbtg system; the dbtg data model; the dbtg data submodel; the dbtg data</field>
      <field key="sub" subkey="l">anguage; security and integrity: security; integrity;</field>
      <field key="540" subkey="">0-201-14452-2</field>
      <field key="544" subkey="">7652-A</field>
    </SEQUENTIAL>
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