Document (#8359)

Author

Tenopir, C.

Title

Online databases : standardization across databases

Source

Library journal. 119(1994) no.8, S.30-32

Year

1994

Abstract

Online offers the advantage over CD-ROM and locally loaded databases of being able to search several databases simultaneously. However, even when different databases have common fields, they may be named differently. This is improving, particularly throught he efforts of Mead Data Central and DIALOG. Discusses searching single databases; 2 ways in which online systems standardise fields; the lack of standardisation in the field tag SF=; Dialog's standardisation; generic field designs; standardisation of field content and NEXIS and uniform segmentation

Similar documents (author)

1. Tenopir, C.: Full text databases (1984) 4.76

   4.7649565 = sum of:
     4.7649565 = weight(author_txt:tenopir in 397) [ClassicSimilarity], result of:
       4.7649565 = fieldWeight in 397, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.62393 = idf(docFreq=58, maxDocs=44421)
         0.625 = fieldNorm(doc=397)
   

2. Tenopir, C.: Full text database retrieval performance (1985) 4.76

   4.7649565 = sum of:
     4.7649565 = weight(author_txt:tenopir in 405) [ClassicSimilarity], result of:
       4.7649565 = fieldWeight in 405, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.62393 = idf(docFreq=58, maxDocs=44421)
         0.625 = fieldNorm(doc=405)
   

3. Tenopir, C.: ¬The user-system interface (1989) 4.76

   4.7649565 = sum of:
     4.7649565 = weight(author_txt:tenopir in 1046) [ClassicSimilarity], result of:
       4.7649565 = fieldWeight in 1046, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.62393 = idf(docFreq=58, maxDocs=44421)
         0.625 = fieldNorm(doc=1046)
   

4. Tenopir, C.: Searching by controlled vocabulary or free text (1987) 4.76

   4.7649565 = sum of:
     4.7649565 = weight(author_txt:tenopir in 1349) [ClassicSimilarity], result of:
       4.7649565 = fieldWeight in 1349, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.62393 = idf(docFreq=58, maxDocs=44421)
         0.625 = fieldNorm(doc=1349)
   

5. Tenopir, C.: Evaluation criteria for online, CD-ROM (1992) 4.76

   4.7649565 = sum of:
     4.7649565 = weight(author_txt:tenopir in 6366) [ClassicSimilarity], result of:
       4.7649565 = fieldWeight in 6366, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.62393 = idf(docFreq=58, maxDocs=44421)
         0.625 = fieldNorm(doc=6366)
   

Similar documents (content)

1. Tenopir, C.; Hover, K.: When is the same database not the same : database differences among systems (1993) 0.13

   0.12690881 = sum of:
     0.12690881 = product of:
       0.634544 = sum of:
         0.11187217 = weight(abstract_txt:locally in 6285) [ClassicSimilarity], result of:
           0.11187217 = score(doc=6285,freq=1.0), product of:
             0.14310154 = queryWeight, product of:
               1.292078 = boost
               7.1475906 = idf(docFreq=94, maxDocs=44421)
               0.015495155 = queryNorm
             0.7817677 = fieldWeight in 6285, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.1475906 = idf(docFreq=94, maxDocs=44421)
               0.109375 = fieldNorm(doc=6285)
         0.1520445 = weight(abstract_txt:loaded in 6285) [ClassicSimilarity], result of:
           0.1520445 = score(doc=6285,freq=1.0), product of:
             0.1755807 = queryWeight, product of:
               1.4312152 = boost
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.015495155 = queryNorm
             0.86595225 = fieldWeight in 6285, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.109375 = fieldNorm(doc=6285)
         0.06396592 = weight(abstract_txt:online in 6285) [ClassicSimilarity], result of:
           0.06396592 = score(doc=6285,freq=2.0), product of:
             0.11284764 = queryWeight, product of:
               1.9873457 = boost
               3.6645708 = idf(docFreq=3092, maxDocs=44421)
               0.015495155 = queryNorm
             0.56683433 = fieldWeight in 6285, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6645708 = idf(docFreq=3092, maxDocs=44421)
               0.109375 = fieldNorm(doc=6285)
         0.083109245 = weight(abstract_txt:field in 6285) [ClassicSimilarity], result of:
           0.083109245 = score(doc=6285,freq=1.0), product of:
             0.16929193 = queryWeight, product of:
               2.4341388 = boost
               4.4884357 = idf(docFreq=1356, maxDocs=44421)
               0.015495155 = queryNorm
             0.49092266 = fieldWeight in 6285, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4884357 = idf(docFreq=1356, maxDocs=44421)
               0.109375 = fieldNorm(doc=6285)
         0.22355214 = weight(abstract_txt:databases in 6285) [ClassicSimilarity], result of:
           0.22355214 = score(doc=6285,freq=2.0), product of:
             0.3274331 = queryWeight, product of:
               4.7874417 = boost
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.015495155 = queryNorm
             0.6827414 = fieldWeight in 6285, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.109375 = fieldNorm(doc=6285)
       0.2 = coord(5/25)
   

2. Paul, N.: Traditional newsbank serives : facing a challenging future (1994) 0.12

   0.123940654 = sum of:
     0.123940654 = product of:
       0.7746291 = sum of:
         0.12769952 = weight(abstract_txt:dialog in 1019) [ClassicSimilarity], result of:
           0.12769952 = score(doc=1019,freq=1.0), product of:
             0.123221874 = queryWeight, product of:
               1.1989759 = boost
               6.6325636 = idf(docFreq=158, maxDocs=44421)
               0.015495155 = queryNorm
             1.0363381 = fieldWeight in 1019, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6325636 = idf(docFreq=158, maxDocs=44421)
               0.15625 = fieldNorm(doc=1019)
         0.25657043 = weight(abstract_txt:nexis in 1019) [ClassicSimilarity], result of:
           0.25657043 = score(doc=1019,freq=1.0), product of:
             0.19620016 = queryWeight, product of:
               1.512921 = boost
               8.369263 = idf(docFreq=27, maxDocs=44421)
               0.015495155 = queryNorm
             1.3076973 = fieldWeight in 1019, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.369263 = idf(docFreq=27, maxDocs=44421)
               0.15625 = fieldNorm(doc=1019)
         0.32574382 = weight(abstract_txt:mead in 1019) [ClassicSimilarity], result of:
           0.32574382 = score(doc=1019,freq=1.0), product of:
             0.23004481 = queryWeight, product of:
               1.6382221 = boost
               9.06241 = idf(docFreq=13, maxDocs=44421)
               0.015495155 = queryNorm
             1.4160016 = fieldWeight in 1019, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.06241 = idf(docFreq=13, maxDocs=44421)
               0.15625 = fieldNorm(doc=1019)
         0.06461534 = weight(abstract_txt:online in 1019) [ClassicSimilarity], result of:
           0.06461534 = score(doc=1019,freq=1.0), product of:
             0.11284764 = queryWeight, product of:
               1.9873457 = boost
               3.6645708 = idf(docFreq=3092, maxDocs=44421)
               0.015495155 = queryNorm
             0.57258916 = fieldWeight in 1019, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6645708 = idf(docFreq=3092, maxDocs=44421)
               0.15625 = fieldNorm(doc=1019)
       0.16 = coord(4/25)
   

3. Reed, L.L.: Locally loaded databases and undergraduate instructions (1993) 0.12

   0.11753852 = sum of:
     0.11753852 = product of:
       0.73461574 = sum of:
         0.15821114 = weight(abstract_txt:locally in 6971) [ClassicSimilarity], result of:
           0.15821114 = score(doc=6971,freq=2.0), product of:
             0.14310154 = queryWeight, product of:
               1.292078 = boost
               7.1475906 = idf(docFreq=94, maxDocs=44421)
               0.015495155 = queryNorm
             1.1055865 = fieldWeight in 6971, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.1475906 = idf(docFreq=94, maxDocs=44421)
               0.109375 = fieldNorm(doc=6971)
         0.21502337 = weight(abstract_txt:loaded in 6971) [ClassicSimilarity], result of:
           0.21502337 = score(doc=6971,freq=2.0), product of:
             0.1755807 = queryWeight, product of:
               1.4312152 = boost
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.015495155 = queryNorm
             1.2246413 = fieldWeight in 6971, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.109375 = fieldNorm(doc=6971)
         0.04523074 = weight(abstract_txt:online in 6971) [ClassicSimilarity], result of:
           0.04523074 = score(doc=6971,freq=1.0), product of:
             0.11284764 = queryWeight, product of:
               1.9873457 = boost
               3.6645708 = idf(docFreq=3092, maxDocs=44421)
               0.015495155 = queryNorm
             0.40081245 = fieldWeight in 6971, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6645708 = idf(docFreq=3092, maxDocs=44421)
               0.109375 = fieldNorm(doc=6971)
         0.3161505 = weight(abstract_txt:databases in 6971) [ClassicSimilarity], result of:
           0.3161505 = score(doc=6971,freq=4.0), product of:
             0.3274331 = queryWeight, product of:
               4.7874417 = boost
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.015495155 = queryNorm
             0.9655422 = fieldWeight in 6971, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.109375 = fieldNorm(doc=6971)
       0.16 = coord(4/25)
   

4. Machovec, G.S.: Navigating the Internet : library systems and database limitations (1992) 0.09

   0.08822956 = sum of:
     0.08822956 = product of:
       0.55143476 = sum of:
         0.11187217 = weight(abstract_txt:locally in 3737) [ClassicSimilarity], result of:
           0.11187217 = score(doc=3737,freq=1.0), product of:
             0.14310154 = queryWeight, product of:
               1.292078 = boost
               7.1475906 = idf(docFreq=94, maxDocs=44421)
               0.015495155 = queryNorm
             0.7817677 = fieldWeight in 3737, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.1475906 = idf(docFreq=94, maxDocs=44421)
               0.109375 = fieldNorm(doc=3737)
         0.1520445 = weight(abstract_txt:loaded in 3737) [ClassicSimilarity], result of:
           0.1520445 = score(doc=3737,freq=1.0), product of:
             0.1755807 = queryWeight, product of:
               1.4312152 = boost
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.015495155 = queryNorm
             0.86595225 = fieldWeight in 3737, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.917278 = idf(docFreq=43, maxDocs=44421)
               0.109375 = fieldNorm(doc=3737)
         0.06396592 = weight(abstract_txt:online in 3737) [ClassicSimilarity], result of:
           0.06396592 = score(doc=3737,freq=2.0), product of:
             0.11284764 = queryWeight, product of:
               1.9873457 = boost
               3.6645708 = idf(docFreq=3092, maxDocs=44421)
               0.015495155 = queryNorm
             0.56683433 = fieldWeight in 3737, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6645708 = idf(docFreq=3092, maxDocs=44421)
               0.109375 = fieldNorm(doc=3737)
         0.22355214 = weight(abstract_txt:databases in 3737) [ClassicSimilarity], result of:
           0.22355214 = score(doc=3737,freq=2.0), product of:
             0.3274331 = queryWeight, product of:
               4.7874417 = boost
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.015495155 = queryNorm
             0.6827414 = fieldWeight in 3737, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.109375 = fieldNorm(doc=3737)
       0.16 = coord(4/25)
   

5. Poynder, R.: LEXIS-NEXIS (1997) 0.09

   0.08734141 = sum of:
     0.08734141 = product of:
       0.54588383 = sum of:
         0.06384976 = weight(abstract_txt:dialog in 1426) [ClassicSimilarity], result of:
           0.06384976 = score(doc=1426,freq=1.0), product of:
             0.123221874 = queryWeight, product of:
               1.1989759 = boost
               6.6325636 = idf(docFreq=158, maxDocs=44421)
               0.015495155 = queryNorm
             0.51816905 = fieldWeight in 1426, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.6325636 = idf(docFreq=158, maxDocs=44421)
               0.078125 = fieldNorm(doc=1426)
         0.28685448 = weight(abstract_txt:nexis in 1426) [ClassicSimilarity], result of:
           0.28685448 = score(doc=1426,freq=5.0), product of:
             0.19620016 = queryWeight, product of:
               1.512921 = boost
               8.369263 = idf(docFreq=27, maxDocs=44421)
               0.015495155 = queryNorm
             1.4620501 = fieldWeight in 1426, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               8.369263 = idf(docFreq=27, maxDocs=44421)
               0.078125 = fieldNorm(doc=1426)
         0.16287191 = weight(abstract_txt:mead in 1426) [ClassicSimilarity], result of:
           0.16287191 = score(doc=1426,freq=1.0), product of:
             0.23004481 = queryWeight, product of:
               1.6382221 = boost
               9.06241 = idf(docFreq=13, maxDocs=44421)
               0.015495155 = queryNorm
             0.7080008 = fieldWeight in 1426, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.06241 = idf(docFreq=13, maxDocs=44421)
               0.078125 = fieldNorm(doc=1426)
         0.03230767 = weight(abstract_txt:online in 1426) [ClassicSimilarity], result of:
           0.03230767 = score(doc=1426,freq=1.0), product of:
             0.11284764 = queryWeight, product of:
               1.9873457 = boost
               3.6645708 = idf(docFreq=3092, maxDocs=44421)
               0.015495155 = queryNorm
             0.28629458 = fieldWeight in 1426, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6645708 = idf(docFreq=3092, maxDocs=44421)
               0.078125 = fieldNorm(doc=1426)
       0.16 = coord(4/25)