Document (#38103)

Author
Hunger, M.
Neubauer, P.
Title
¬Die vernetzte Welt : Abfragesprachen für Graphendatenbanken
Source
http://www.heise.de/developer/artikel/Abfragesprachen-fuer-Graphendatenbanken-1985666.html?view=print
Year
2013
Abstract
Graphendatenbanken sind darauf optimiert, stark miteinander vernetzte Informationen effizient zu speichern und greifbar zu machen. Welchen Ansprüchen müssen Abfragesprachen genügen, damit sie für die Arbeit mit diesen Datenbanken geeignet sind? Bei der Aufarbeitung realer Informationen zeigt sich, dass ein hoher, aber unterschätzter Wert in den Beziehungen zwischen Elementen steckt. Seien es Ereignisse aus Geschichte und Politik, Personen in realen und virtuellen sozialen Netzen, Proteine und Gene, Abhängigkeiten in Märkten und Ökonomien oder Rechnernetze, Computer, Software und Anwender - alles ist miteinander verbunden. Der Graph ist ein Datenmodell, das solche Verbindungsgeflechte abbilden kann. Leider lässt sich das Modell mit relationalen und Aggregat-orientierten NoSQL-Datenbanken ab einer gewissen Komplexität jedoch schwer handhaben. Graphendatenbanken sind dagegen darauf optimiert, solche stark miteinander vernetzten Informationen effizient zu speichern und greifbar zu machen. Auch komplexe Fragen lassen sich durch ausgefeilte Abfragen schnell beantworten. Hierbei kommt es auf die geeignete Abfragesprache an.
Theme
Wissensrepräsentation

Similar documents (author)

  1. Hunger, H.: Zentralisation und Dezentralisation im Schlagwort (1955) 2.56
    2.559926 = sum of:
      2.559926 = product of:
        5.119852 = sum of:
          5.119852 = weight(author_txt:hunger in 612) [ClassicSimilarity], result of:
            5.119852 = score(doc=612,freq=1.0), product of:
              0.82886696 = queryWeight, product of:
                1.2172041 = boost
                9.883085 = idf(docFreq=5, maxDocs=43254)
                0.06890153 = queryNorm
              6.1769285 = fieldWeight in 612, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.883085 = idf(docFreq=5, maxDocs=43254)
                0.625 = fieldNorm(doc=612)
        0.5 = coord(1/2)
    
  2. Hunger, A.; Retz, H.: Datenmodelle und deren grafische Repräsentation (1992) 2.05
    2.0479407 = sum of:
      2.0479407 = product of:
        4.0958815 = sum of:
          4.0958815 = weight(author_txt:hunger in 2424) [ClassicSimilarity], result of:
            4.0958815 = score(doc=2424,freq=1.0), product of:
              0.82886696 = queryWeight, product of:
                1.2172041 = boost
                9.883085 = idf(docFreq=5, maxDocs=43254)
                0.06890153 = queryNorm
              4.9415426 = fieldWeight in 2424, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.883085 = idf(docFreq=5, maxDocs=43254)
                0.5 = fieldNorm(doc=2424)
        0.5 = coord(1/2)
    
  3. Neubauer, K.W.: Kommunikation in Bibliotheken : ein aussichtsloser Fall? (1991) 1.42
    1.419506 = sum of:
      1.419506 = product of:
        2.839012 = sum of:
          2.839012 = weight(author_txt:neubauer in 511) [ClassicSimilarity], result of:
            2.839012 = score(doc=511,freq=1.0), product of:
              0.5594458 = queryWeight, product of:
                8.119497 = idf(docFreq=34, maxDocs=43254)
                0.06890153 = queryNorm
              5.074686 = fieldWeight in 511, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.119497 = idf(docFreq=34, maxDocs=43254)
                0.625 = fieldNorm(doc=511)
        0.5 = coord(1/2)
    
  4. Neubauer, K.W.: Neuere Tendenzen bei der Entwicklung von Verbundsystemen für Bibliotheken (1984) 1.42
    1.419506 = sum of:
      1.419506 = product of:
        2.839012 = sum of:
          2.839012 = weight(author_txt:neubauer in 533) [ClassicSimilarity], result of:
            2.839012 = score(doc=533,freq=1.0), product of:
              0.5594458 = queryWeight, product of:
                8.119497 = idf(docFreq=34, maxDocs=43254)
                0.06890153 = queryNorm
              5.074686 = fieldWeight in 533, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.119497 = idf(docFreq=34, maxDocs=43254)
                0.625 = fieldNorm(doc=533)
        0.5 = coord(1/2)
    
  5. Neubauer, K.W.: Grenzen und Zukunft der regionalen Verbundsysteme in Deutschland (1986) 1.42
    1.419506 = sum of:
      1.419506 = product of:
        2.839012 = sum of:
          2.839012 = weight(author_txt:neubauer in 534) [ClassicSimilarity], result of:
            2.839012 = score(doc=534,freq=1.0), product of:
              0.5594458 = queryWeight, product of:
                8.119497 = idf(docFreq=34, maxDocs=43254)
                0.06890153 = queryNorm
              5.074686 = fieldWeight in 534, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.119497 = idf(docFreq=34, maxDocs=43254)
                0.625 = fieldNorm(doc=534)
        0.5 = coord(1/2)
    

Similar documents (content)

  1. Lusti, M.: Dateien und Datenbanken : eine anwendungsorientierte Einführung (1997) 0.09
    0.09302099 = sum of:
      0.09302099 = product of:
        0.5813812 = sum of:
          0.14071241 = weight(abstract_txt:abfragen in 3285) [ClassicSimilarity], result of:
            0.14071241 = score(doc=3285,freq=1.0), product of:
              0.16332343 = queryWeight, product of:
                1.0815775 = boost
                9.189939 = idf(docFreq=11, maxDocs=43254)
                0.016431538 = queryNorm
              0.86155677 = fieldWeight in 3285, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.189939 = idf(docFreq=11, maxDocs=43254)
                0.09375 = fieldNorm(doc=3285)
          0.098760605 = weight(abstract_txt:datenbanken in 3285) [ClassicSimilarity], result of:
            0.098760605 = score(doc=3285,freq=2.0), product of:
              0.12898803 = queryWeight, product of:
                1.3593245 = boost
                5.7749476 = idf(docFreq=364, maxDocs=43254)
                0.016431538 = queryNorm
              0.7656571 = fieldWeight in 3285, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.7749476 = idf(docFreq=364, maxDocs=43254)
                0.09375 = fieldNorm(doc=3285)
          0.03321823 = weight(abstract_txt:sind in 3285) [ClassicSimilarity], result of:
            0.03321823 = score(doc=3285,freq=1.0), product of:
              0.08997427 = queryWeight, product of:
                1.3904431 = boost
                3.9381013 = idf(docFreq=2290, maxDocs=43254)
                0.016431538 = queryNorm
              0.369197 = fieldWeight in 3285, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9381013 = idf(docFreq=2290, maxDocs=43254)
                0.09375 = fieldNorm(doc=3285)
          0.30868992 = weight(abstract_txt:abfragesprachen in 3285) [ClassicSimilarity], result of:
            0.30868992 = score(doc=3285,freq=1.0), product of:
              0.34741765 = queryWeight, product of:
                2.2308705 = boost
                9.47762 = idf(docFreq=8, maxDocs=43254)
                0.016431538 = queryNorm
              0.8885269 = fieldWeight in 3285, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.47762 = idf(docFreq=8, maxDocs=43254)
                0.09375 = fieldNorm(doc=3285)
        0.16 = coord(4/25)
    
  2. Hotze, M.: Portale für Spezialbibliotheken : Integration von naturwissenschaftlichen Informationsquellen in ein Fachinformationsportal (2003) 0.09
    0.090148255 = sum of:
      0.090148255 = product of:
        0.37561774 = sum of:
          0.020820292 = weight(abstract_txt:sich in 3918) [ClassicSimilarity], result of:
            0.020820292 = score(doc=3918,freq=1.0), product of:
              0.074412525 = queryWeight, product of:
                1.2644949 = boost
                3.5813828 = idf(docFreq=3272, maxDocs=43254)
                0.016431538 = queryNorm
              0.27979553 = fieldWeight in 3918, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5813828 = idf(docFreq=3272, maxDocs=43254)
                0.078125 = fieldNorm(doc=3918)
          0.052534375 = weight(abstract_txt:machen in 3918) [ClassicSimilarity], result of:
            0.052534375 = score(doc=3918,freq=1.0), product of:
              0.12048143 = queryWeight, product of:
                1.3137372 = boost
                5.581275 = idf(docFreq=442, maxDocs=43254)
                0.016431538 = queryNorm
              0.43603712 = fieldWeight in 3918, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.581275 = idf(docFreq=442, maxDocs=43254)
                0.078125 = fieldNorm(doc=3918)
          0.0823005 = weight(abstract_txt:datenbanken in 3918) [ClassicSimilarity], result of:
            0.0823005 = score(doc=3918,freq=2.0), product of:
              0.12898803 = queryWeight, product of:
                1.3593245 = boost
                5.7749476 = idf(docFreq=364, maxDocs=43254)
                0.016431538 = queryNorm
              0.6380476 = fieldWeight in 3918, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.7749476 = idf(docFreq=364, maxDocs=43254)
                0.078125 = fieldNorm(doc=3918)
          0.047946386 = weight(abstract_txt:sind in 3918) [ClassicSimilarity], result of:
            0.047946386 = score(doc=3918,freq=3.0), product of:
              0.08997427 = queryWeight, product of:
                1.3904431 = boost
                3.9381013 = idf(docFreq=2290, maxDocs=43254)
                0.016431538 = queryNorm
              0.53288996 = fieldWeight in 3918, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.9381013 = idf(docFreq=2290, maxDocs=43254)
                0.078125 = fieldNorm(doc=3918)
          0.093130775 = weight(abstract_txt:stark in 3918) [ClassicSimilarity], result of:
            0.093130775 = score(doc=3918,freq=1.0), product of:
              0.17647636 = queryWeight, product of:
                1.5899801 = boost
                6.754864 = idf(docFreq=136, maxDocs=43254)
                0.016431538 = queryNorm
              0.5277238 = fieldWeight in 3918, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.754864 = idf(docFreq=136, maxDocs=43254)
                0.078125 = fieldNorm(doc=3918)
          0.07888541 = weight(abstract_txt:informationen in 3918) [ClassicSimilarity], result of:
            0.07888541 = score(doc=3918,freq=2.0), product of:
              0.14354101 = queryWeight, product of:
                1.7562327 = boost
                4.974114 = idf(docFreq=812, maxDocs=43254)
                0.016431538 = queryNorm
              0.5495671 = fieldWeight in 3918, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.974114 = idf(docFreq=812, maxDocs=43254)
                0.078125 = fieldNorm(doc=3918)
        0.24 = coord(6/25)
    
  3. Lusti, M.: Dateien und Datenbanken : eine anwendungsorientierte Einführung (2003) 0.09
    0.08839277 = sum of:
      0.08839277 = product of:
        0.5524548 = sum of:
          0.14071241 = weight(abstract_txt:abfragen in 3287) [ClassicSimilarity], result of:
            0.14071241 = score(doc=3287,freq=1.0), product of:
              0.16332343 = queryWeight, product of:
                1.0815775 = boost
                9.189939 = idf(docFreq=11, maxDocs=43254)
                0.016431538 = queryNorm
              0.86155677 = fieldWeight in 3287, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.189939 = idf(docFreq=11, maxDocs=43254)
                0.09375 = fieldNorm(doc=3287)
          0.06983429 = weight(abstract_txt:datenbanken in 3287) [ClassicSimilarity], result of:
            0.06983429 = score(doc=3287,freq=1.0), product of:
              0.12898803 = queryWeight, product of:
                1.3593245 = boost
                5.7749476 = idf(docFreq=364, maxDocs=43254)
                0.016431538 = queryNorm
              0.5414013 = fieldWeight in 3287, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.7749476 = idf(docFreq=364, maxDocs=43254)
                0.09375 = fieldNorm(doc=3287)
          0.03321823 = weight(abstract_txt:sind in 3287) [ClassicSimilarity], result of:
            0.03321823 = score(doc=3287,freq=1.0), product of:
              0.08997427 = queryWeight, product of:
                1.3904431 = boost
                3.9381013 = idf(docFreq=2290, maxDocs=43254)
                0.016431538 = queryNorm
              0.369197 = fieldWeight in 3287, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9381013 = idf(docFreq=2290, maxDocs=43254)
                0.09375 = fieldNorm(doc=3287)
          0.30868992 = weight(abstract_txt:abfragesprachen in 3287) [ClassicSimilarity], result of:
            0.30868992 = score(doc=3287,freq=1.0), product of:
              0.34741765 = queryWeight, product of:
                2.2308705 = boost
                9.47762 = idf(docFreq=8, maxDocs=43254)
                0.016431538 = queryNorm
              0.8885269 = fieldWeight in 3287, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.47762 = idf(docFreq=8, maxDocs=43254)
                0.09375 = fieldNorm(doc=3287)
        0.16 = coord(4/25)
    
  4. Temath, C.: Prototypische Implementierung der "Topic Map Query Language"-Abfragesprache für die Groupware-basierte Topic Map Engine (2005) 0.09
    0.087881334 = sum of:
      0.087881334 = product of:
        0.43940666 = sum of:
          0.13266492 = weight(abstract_txt:abfragen in 1665) [ClassicSimilarity], result of:
            0.13266492 = score(doc=1665,freq=2.0), product of:
              0.16332343 = queryWeight, product of:
                1.0815775 = boost
                9.189939 = idf(docFreq=11, maxDocs=43254)
                0.016431538 = queryNorm
              0.81228346 = fieldWeight in 1665, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                9.189939 = idf(docFreq=11, maxDocs=43254)
                0.0625 = fieldNorm(doc=1665)
          0.18494971 = weight(abstract_txt:abfragesprache in 1665) [ClassicSimilarity], result of:
            0.18494971 = score(doc=1665,freq=3.0), product of:
              0.1780532 = queryWeight, product of:
                1.1292974 = boost
                9.595404 = idf(docFreq=7, maxDocs=43254)
                0.016431538 = queryNorm
              1.0387329 = fieldWeight in 1665, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                9.595404 = idf(docFreq=7, maxDocs=43254)
                0.0625 = fieldNorm(doc=1665)
          0.016656233 = weight(abstract_txt:sich in 1665) [ClassicSimilarity], result of:
            0.016656233 = score(doc=1665,freq=1.0), product of:
              0.074412525 = queryWeight, product of:
                1.2644949 = boost
                3.5813828 = idf(docFreq=3272, maxDocs=43254)
                0.016431538 = queryNorm
              0.22383642 = fieldWeight in 1665, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5813828 = idf(docFreq=3272, maxDocs=43254)
                0.0625 = fieldNorm(doc=1665)
          0.0420275 = weight(abstract_txt:machen in 1665) [ClassicSimilarity], result of:
            0.0420275 = score(doc=1665,freq=1.0), product of:
              0.12048143 = queryWeight, product of:
                1.3137372 = boost
                5.581275 = idf(docFreq=442, maxDocs=43254)
                0.016431538 = queryNorm
              0.3488297 = fieldWeight in 1665, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.581275 = idf(docFreq=442, maxDocs=43254)
                0.0625 = fieldNorm(doc=1665)
          0.06310833 = weight(abstract_txt:informationen in 1665) [ClassicSimilarity], result of:
            0.06310833 = score(doc=1665,freq=2.0), product of:
              0.14354101 = queryWeight, product of:
                1.7562327 = boost
                4.974114 = idf(docFreq=812, maxDocs=43254)
                0.016431538 = queryNorm
              0.4396537 = fieldWeight in 1665, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.974114 = idf(docFreq=812, maxDocs=43254)
                0.0625 = fieldNorm(doc=1665)
        0.2 = coord(5/25)
    
  5. Batscheider, M.: infocore-Metasuchplattform nach Maß (2004) 0.08
    0.082842164 = sum of:
      0.082842164 = product of:
        0.4142108 = sum of:
          0.02498435 = weight(abstract_txt:sich in 4995) [ClassicSimilarity], result of:
            0.02498435 = score(doc=4995,freq=1.0), product of:
              0.074412525 = queryWeight, product of:
                1.2644949 = boost
                3.5813828 = idf(docFreq=3272, maxDocs=43254)
                0.016431538 = queryNorm
              0.33575463 = fieldWeight in 4995, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5813828 = idf(docFreq=3272, maxDocs=43254)
                0.09375 = fieldNorm(doc=4995)
          0.06983429 = weight(abstract_txt:datenbanken in 4995) [ClassicSimilarity], result of:
            0.06983429 = score(doc=4995,freq=1.0), product of:
              0.12898803 = queryWeight, product of:
                1.3593245 = boost
                5.7749476 = idf(docFreq=364, maxDocs=43254)
                0.016431538 = queryNorm
              0.5414013 = fieldWeight in 4995, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.7749476 = idf(docFreq=364, maxDocs=43254)
                0.09375 = fieldNorm(doc=4995)
          0.03321823 = weight(abstract_txt:sind in 4995) [ClassicSimilarity], result of:
            0.03321823 = score(doc=4995,freq=1.0), product of:
              0.08997427 = queryWeight, product of:
                1.3904431 = boost
                3.9381013 = idf(docFreq=2290, maxDocs=43254)
                0.016431538 = queryNorm
              0.369197 = fieldWeight in 4995, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9381013 = idf(docFreq=2290, maxDocs=43254)
                0.09375 = fieldNorm(doc=4995)
          0.0669365 = weight(abstract_txt:informationen in 4995) [ClassicSimilarity], result of:
            0.0669365 = score(doc=4995,freq=1.0), product of:
              0.14354101 = queryWeight, product of:
                1.7562327 = boost
                4.974114 = idf(docFreq=812, maxDocs=43254)
                0.016431538 = queryNorm
              0.4663232 = fieldWeight in 4995, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.974114 = idf(docFreq=812, maxDocs=43254)
                0.09375 = fieldNorm(doc=4995)
          0.21923742 = weight(abstract_txt:optimiert in 4995) [ClassicSimilarity], result of:
            0.21923742 = score(doc=4995,freq=1.0), product of:
              0.27655405 = queryWeight, product of:
                1.9903911 = boost
                8.455969 = idf(docFreq=24, maxDocs=43254)
                0.016431538 = queryNorm
              0.7927471 = fieldWeight in 4995, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.455969 = idf(docFreq=24, maxDocs=43254)
                0.09375 = fieldNorm(doc=4995)
        0.2 = coord(5/25)