The Resource The nested universal relation database model, M. Levene

The nested universal relation database model, M. Levene

Label
The nested universal relation database model
Title
The nested universal relation database model
Statement of responsibility
M. Levene
Creator
Subject
Language
eng
Summary
"This monograph describes a method of data modelling whose basic aim is to make databases easier to use by providing them with logical data independence. To achieve this, the nested UR (universal relation) model is defined by extending the classical UR model to nested relations. Nested relations generalize flat relations and allow hierarchically structured objects to be modelled directly, whereas the classical UR model allows the user to view the database as if it were composed of a single flat relation. The author presents a comprehensive formalisation of the nested relational model, which incorporated null values into the model. Functional data dependencies and the classical notion of lossless decomposition are extended to nested relations and an extended chase procedure is defined to test the satisfaction of the data dependencies. The nested UR model is defined, and the classical UR model is shown to be a special case of the nested model. This implies that an UR interface canbe implemented by using the nested UR model, thus gaining the full advantages of nested relations over flat relations."--PUBLISHER'S WEBSITE
Member of
Cataloging source
DLC
http://library.link/vocab/creatorDate
1957-
http://library.link/vocab/creatorName
Levene, M.
Dissertation note
Revision of the author's thesis (Ph. D.)--Birkbeck College, 1990.
Illustrations
illustrations
Index
index present
LC call number
QA76.9.D3
LC item number
L48 1992
Literary form
non fiction
Nature of contents
bibliography
http://library.link/vocab/subjectName
  • Relational databases
  • Database design
  • relation universelle
  • relation imbriquée
  • modèle base donnée
  • modèle relationnel
  • Bases de données relationnelles
  • Bases de données
  • Database design
  • Relational databases
  • Relationele databanken
  • Banco De Dados
  • Bases de données
  • Relationales Datenbanksystem
  • Geschachtelte Relation
  • UDS
Label
The nested universal relation database model, M. Levene
Instantiates
Publication
Bibliography note
Includes bibliographical references (p. [163]-173) and index
Carrier category
volume
Carrier category code
  • nc
Carrier MARC source
rdacarrier
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Dimensions
25 cm.
Extent
177 pages
Isbn
9783540554936
Isbn Type
(Berlin : acid-free paper)
Lccn
92010727
Media category
unmediated
Media MARC source
rdamedia
Media type code
  • n
Other physical details
illustrations
System control number
  • (OCoLC)25629440
  • (OCoLC)ocm25629440
Label
The nested universal relation database model, M. Levene
Publication
Bibliography note
Includes bibliographical references (p. [163]-173) and index
Carrier category
volume
Carrier category code
  • nc
Carrier MARC source
rdacarrier
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Dimensions
25 cm.
Extent
177 pages
Isbn
9783540554936
Isbn Type
(Berlin : acid-free paper)
Lccn
92010727
Media category
unmediated
Media MARC source
rdamedia
Media type code
  • n
Other physical details
illustrations
System control number
  • (OCoLC)25629440
  • (OCoLC)ocm25629440

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