liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Compilation of multiple file queries in a meta-database system
Linköping University, Department of Mathematics. Linköping University, The Institute of Technology.
1978 (English)Doctoral thesis, monograph (Other academic)
Abstract [en]

A meta-database system is constructed for describing the contents of very large databases. The meta-database is implemented as data structures in a symbol manipulation language, separate from the underlying database system. A number of programs are built around the meta-database. The most important program module is a query compiler, which translates a non-procedural query language called LRL into a lower level language (COBOL). LRL permits the specification of database retrievals without stating which files are to be used in the search, or how they shall be connected. This is decided automatically by the query compiler. A major feature of the system is a method, the Focus method, for compiletime optimization of these choices. Other facilities include the definition of "views" of the database; data directory services; authority codes; and meta-database entry and update.

Design issues discussed include the decision to compile rather than interpret non-procedural query languages; the decision to separate the meta-database from the underlying database system; and the problem of achieving an architecture convertible to any underlying database system. Experience with one such conversion is reported.   

Place, publisher, year, edition, pages
Linköping: Linköpings universitet , 1978. , 174 p.
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 33
National Category
Computer Science
Identifiers
URN: urn:nbn:se:liu:diva-35621Local ID: 27977ISBN: 91-7372-232-4 (print)OAI: oai:DiVA.org:liu-35621DiVA: diva2:256469
Public defence
1978-11-23, Sal BDL 6, Universitetet i Linköping, Linköping, 13:15 (Swedish)
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2013-01-18

Open Access in DiVA

No full text

Authority records BETA

Risch, Tore

Search in DiVA

By author/editor
Risch, Tore
By organisation
Department of MathematicsThe Institute of Technology
Computer Science

Search outside of DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 57 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf