Document (#6600)

Author

Staud, J.L.

Title

Relationale Datenbanksysteme : eine Einführung

Source

Datenbanken in Theorie und Praxis. 1994, H.1, S.7-21

Year

1994

Abstract

Relationale Datenbankensysteme verbreiten sich immer mehr. Auch und gerade bei Nutzern, die keine datentechnische Ausbildung haben. Der folgende Beitrag versucht den Kern des relationalen Ansatzes - sozusagen seine Philosophie - in verständlicher Form darzustellen

Similar documents (author)

1. Staud, J.L.: ¬Die Welt der Online-Datenbanken : Modellierung, Datenstruktur und Retrievalprozeß (1986) 5.25

   5.2535195 = sum of:
     5.2535195 = weight(author_txt:staud in 980) [ClassicSimilarity], result of:
       5.2535195 = fieldWeight in 980, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.405631 = idf(docFreq=26, maxDocs=44421)
         0.625 = fieldNorm(doc=980)
   

2. Staud, J.L.: Relationale Datenbanken aufbauen : die zweiten drei Normalformen (1994) 5.25

   5.2535195 = sum of:
     5.2535195 = weight(author_txt:staud in 5339) [ClassicSimilarity], result of:
       5.2535195 = fieldWeight in 5339, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.405631 = idf(docFreq=26, maxDocs=44421)
         0.625 = fieldNorm(doc=5339)
   

3. Staud, J.L.: Typen datenverwaltender Systeme : T.1 (1993) 5.25

   5.2535195 = sum of:
     5.2535195 = weight(author_txt:staud in 6677) [ClassicSimilarity], result of:
       5.2535195 = fieldWeight in 6677, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.405631 = idf(docFreq=26, maxDocs=44421)
         0.625 = fieldNorm(doc=6677)
   

4. Staud, J.L.: Lernen mit Hypermedia : die CBT-Disketten der Fernuniversität (1994) 5.25

   5.2535195 = sum of:
     5.2535195 = weight(author_txt:staud in 7184) [ClassicSimilarity], result of:
       5.2535195 = fieldWeight in 7184, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.405631 = idf(docFreq=26, maxDocs=44421)
         0.625 = fieldNorm(doc=7184)
   

5. Staud, J.L.: Relationale Datenbanken aufbauen : die ersten drei Normalformen (1994) 5.25

   5.2535195 = sum of:
     5.2535195 = weight(author_txt:staud in 7433) [ClassicSimilarity], result of:
       5.2535195 = fieldWeight in 7433, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         8.405631 = idf(docFreq=26, maxDocs=44421)
         0.625 = fieldNorm(doc=7433)
   

Similar documents (content)

1. Kießling, W.; Köstler, G.: Multimedia-Kurs Datenbanksysteme (1998) 0.28

   0.27796507 = sum of:
     0.27796507 = product of:
       1.7372818 = sum of:
         0.014576163 = weight(abstract_txt:sich in 4076) [ClassicSimilarity], result of:
           0.014576163 = score(doc=4076,freq=1.0), product of:
             0.04371333 = queryWeight, product of:
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.012290113 = queryNorm
             0.33344892 = fieldWeight in 4076, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.09375 = fieldNorm(doc=4076)
         0.056518186 = weight(abstract_txt:seine in 4076) [ClassicSimilarity], result of:
           0.056518186 = score(doc=4076,freq=1.0), product of:
             0.10788902 = queryWeight, product of:
               1.5710199 = boost
               5.5877852 = idf(docFreq=451, maxDocs=44421)
               0.012290113 = queryNorm
             0.52385485 = fieldWeight in 4076, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5877852 = idf(docFreq=451, maxDocs=44421)
               0.09375 = fieldNorm(doc=4076)
         1.2049868 = weight(title_txt:datenbanksysteme in 4076) [ClassicSimilarity], result of:
           1.2049868 = score(doc=4076,freq=1.0), product of:
             0.27175286 = queryWeight, product of:
               2.4933321 = boost
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.012290113 = queryNorm
             4.4341273 = fieldWeight in 4076, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.5 = fieldNorm(doc=4076)
         0.46120062 = weight(abstract_txt:relationale in 4076) [ClassicSimilarity], result of:
           0.46120062 = score(doc=4076,freq=1.0), product of:
             0.55096203 = queryWeight, product of:
               5.0207534 = boost
               8.928879 = idf(docFreq=15, maxDocs=44421)
               0.012290113 = queryNorm
             0.8370824 = fieldWeight in 4076, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.928879 = idf(docFreq=15, maxDocs=44421)
               0.09375 = fieldNorm(doc=4076)
       0.16 = coord(4/25)
   

2. Röhle, T.: ¬Die Demontage der Gatekeeper : relationale Perspektiven zur Macht der Suchmaschinen (2009) 0.17

   0.17230245 = sum of:
     0.17230245 = product of:
       0.6153659 = sum of:
         0.009717442 = weight(abstract_txt:sich in 1023) [ClassicSimilarity], result of:
           0.009717442 = score(doc=1023,freq=1.0), product of:
             0.04371333 = queryWeight, product of:
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.012290113 = queryNorm
             0.22229928 = fieldWeight in 1023, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.0625 = fieldNorm(doc=1023)
         0.026162226 = weight(abstract_txt:beitrag in 1023) [ClassicSimilarity], result of:
           0.026162226 = score(doc=1023,freq=1.0), product of:
             0.084598444 = queryWeight, product of:
               1.391151 = boost
               4.9480295 = idf(docFreq=856, maxDocs=44421)
               0.012290113 = queryNorm
             0.30925184 = fieldWeight in 1023, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9480295 = idf(docFreq=856, maxDocs=44421)
               0.0625 = fieldNorm(doc=1023)
         0.04482314 = weight(abstract_txt:keine in 1023) [ClassicSimilarity], result of:
           0.04482314 = score(doc=1023,freq=1.0), product of:
             0.121128805 = queryWeight, product of:
               1.6646264 = boost
               5.920724 = idf(docFreq=323, maxDocs=44421)
               0.012290113 = queryNorm
             0.37004524 = fieldWeight in 1023, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.920724 = idf(docFreq=323, maxDocs=44421)
               0.0625 = fieldNorm(doc=1023)
         0.05908941 = weight(abstract_txt:versucht in 1023) [ClassicSimilarity], result of:
           0.05908941 = score(doc=1023,freq=1.0), product of:
             0.14563051 = queryWeight, product of:
               1.8252369 = boost
               6.4919815 = idf(docFreq=182, maxDocs=44421)
               0.012290113 = queryNorm
             0.40574884 = fieldWeight in 1023, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4919815 = idf(docFreq=182, maxDocs=44421)
               0.0625 = fieldNorm(doc=1023)
         0.06757084 = weight(abstract_txt:nutzern in 1023) [ClassicSimilarity], result of:
           0.06757084 = score(doc=1023,freq=1.0), product of:
             0.15925221 = queryWeight, product of:
               1.9086918 = boost
               6.7888126 = idf(docFreq=135, maxDocs=44421)
               0.012290113 = queryNorm
             0.4243008 = fieldWeight in 1023, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.7888126 = idf(docFreq=135, maxDocs=44421)
               0.0625 = fieldNorm(doc=1023)
         0.10053577 = weight(abstract_txt:darzustellen in 1023) [ClassicSimilarity], result of:
           0.10053577 = score(doc=1023,freq=1.0), product of:
             0.20755172 = queryWeight, product of:
               2.178995 = boost
               7.750224 = idf(docFreq=51, maxDocs=44421)
               0.012290113 = queryNorm
             0.484389 = fieldWeight in 1023, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.750224 = idf(docFreq=51, maxDocs=44421)
               0.0625 = fieldNorm(doc=1023)
         0.30746707 = weight(abstract_txt:relationale in 1023) [ClassicSimilarity], result of:
           0.30746707 = score(doc=1023,freq=1.0), product of:
             0.55096203 = queryWeight, product of:
               5.0207534 = boost
               8.928879 = idf(docFreq=15, maxDocs=44421)
               0.012290113 = queryNorm
             0.5580549 = fieldWeight in 1023, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.928879 = idf(docFreq=15, maxDocs=44421)
               0.0625 = fieldNorm(doc=1023)
       0.28 = coord(7/25)
   

3. Kleinschmidt, P.; Rank, C.: Relationale Datenbanksysteme : eine praktische Einführung (1997) 0.17

   0.16835254 = sum of:
     0.16835254 = product of:
       1.4029379 = sum of:
         0.08494512 = weight(abstract_txt:einführung in 1984) [ClassicSimilarity], result of:
           0.08494512 = score(doc=1984,freq=1.0), product of:
             0.11685614 = queryWeight, product of:
               1.635004 = boost
               5.8153634 = idf(docFreq=359, maxDocs=44421)
               0.012290113 = queryNorm
             0.7269204 = fieldWeight in 1984, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8153634 = idf(docFreq=359, maxDocs=44421)
               0.125 = fieldNorm(doc=1984)
         0.26362923 = weight(abstract_txt:relationalen in 1984) [ClassicSimilarity], result of:
           0.26362923 = score(doc=1984,freq=1.0), product of:
             0.24863082 = queryWeight, product of:
               2.384902 = boost
               8.482592 = idf(docFreq=24, maxDocs=44421)
               0.012290113 = queryNorm
             1.060324 = fieldWeight in 1984, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.482592 = idf(docFreq=24, maxDocs=44421)
               0.125 = fieldNorm(doc=1984)
         1.0543635 = weight(title_txt:datenbanksysteme in 1984) [ClassicSimilarity], result of:
           1.0543635 = score(doc=1984,freq=1.0), product of:
             0.27175286 = queryWeight, product of:
               2.4933321 = boost
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.012290113 = queryNorm
             3.8798614 = fieldWeight in 1984, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.4375 = fieldNorm(doc=1984)
       0.12 = coord(3/25)
   

4. Kleinschmidt, P.; Rank, C.: Relationale Datenbanksysteme : eine praktische Einführung (2001) 0.17

   0.16835254 = sum of:
     0.16835254 = product of:
       1.4029379 = sum of:
         0.08494512 = weight(abstract_txt:einführung in 137) [ClassicSimilarity], result of:
           0.08494512 = score(doc=137,freq=1.0), product of:
             0.11685614 = queryWeight, product of:
               1.635004 = boost
               5.8153634 = idf(docFreq=359, maxDocs=44421)
               0.012290113 = queryNorm
             0.7269204 = fieldWeight in 137, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8153634 = idf(docFreq=359, maxDocs=44421)
               0.125 = fieldNorm(doc=137)
         0.26362923 = weight(abstract_txt:relationalen in 137) [ClassicSimilarity], result of:
           0.26362923 = score(doc=137,freq=1.0), product of:
             0.24863082 = queryWeight, product of:
               2.384902 = boost
               8.482592 = idf(docFreq=24, maxDocs=44421)
               0.012290113 = queryNorm
             1.060324 = fieldWeight in 137, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.482592 = idf(docFreq=24, maxDocs=44421)
               0.125 = fieldNorm(doc=137)
         1.0543635 = weight(title_txt:datenbanksysteme in 137) [ClassicSimilarity], result of:
           1.0543635 = score(doc=137,freq=1.0), product of:
             0.27175286 = queryWeight, product of:
               2.4933321 = boost
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.012290113 = queryNorm
             3.8798614 = fieldWeight in 137, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.4375 = fieldNorm(doc=137)
       0.12 = coord(3/25)
   

5. Kaiser, A.: Zeitbezogene Datenbanksysteme : eine Bestandsaufnahme und ausgewählte Problemstellungen (1996) 0.14

   0.14162394 = sum of:
     0.14162394 = product of:
       1.1801995 = sum of:
         0.045783896 = weight(abstract_txt:beitrag in 6189) [ClassicSimilarity], result of:
           0.045783896 = score(doc=6189,freq=1.0), product of:
             0.084598444 = queryWeight, product of:
               1.391151 = boost
               4.9480295 = idf(docFreq=856, maxDocs=44421)
               0.012290113 = queryNorm
             0.54119074 = fieldWeight in 6189, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.9480295 = idf(docFreq=856, maxDocs=44421)
               0.109375 = fieldNorm(doc=6189)
         0.23067558 = weight(abstract_txt:relationalen in 6189) [ClassicSimilarity], result of:
           0.23067558 = score(doc=6189,freq=1.0), product of:
             0.24863082 = queryWeight, product of:
               2.384902 = boost
               8.482592 = idf(docFreq=24, maxDocs=44421)
               0.012290113 = queryNorm
             0.9277835 = fieldWeight in 6189, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.482592 = idf(docFreq=24, maxDocs=44421)
               0.109375 = fieldNorm(doc=6189)
         0.90374005 = weight(title_txt:datenbanksysteme in 6189) [ClassicSimilarity], result of:
           0.90374005 = score(doc=6189,freq=1.0), product of:
             0.27175286 = queryWeight, product of:
               2.4933321 = boost
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.012290113 = queryNorm
             3.3255954 = fieldWeight in 6189, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.868255 = idf(docFreq=16, maxDocs=44421)
               0.375 = fieldNorm(doc=6189)
       0.12 = coord(3/25)