Duro

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Duro

http://duro.sourceforge.net/
Duro is a relational free and open source database library written in C. It is based on the principles laid down in the book Foundation for Future Database Systems: The Third Manifesto by C. J. Date and Hugh Darwen.

The goal of the Duro project is to create a library which is as compliant with the proposed database language D as it is possible for a C library. This library is supposed to serve as a basis for a truly relational database management system (TRDBMS).

  • Tuples and tables (relvars).
  • Relational algebra: RENAME, select (restrict), project, EXTEND, JOIN, SEMIJOIN, UNION, INTERSECT, MINUS, SEMIMINUS, SUMMARIZE PER, DIVIDEBY PER, WRAP, UNWRAP, GROUP, and UNGROUP.
  • Virtual tables (views).
  • Locking and nested transactions.
  • Duro tables are true sets -- uniqueness of tuples (rows) is always enforced. When creating real tables, at least one candidate key must be supplied. A candidate key may be empty.
  • User-defined types (including type constraints) and operators.
  • Declarative integrity.
  • Tcl interface, including support for relational expressions in Tutorial D syntax and operators implemented in Tcl ("stored procedures").
  • Simple GUI admin tool.

xs Duro is implemented on top of the Berkeley DB database library.




Licensing

LicenseVerified byVerified onNotes
GPLv2orlaterTed Teah5 September 2006



Leaders and contributors

Contact(s)Role
René Hartmann Maintainer


Resources and communication

AudienceResource typeURI
DeveloperVCS Repository Webviewhttp://duro.cvs.sourceforge.net/duro/
Bug TrackingVCS Repository Webviewhttp://sourceforge.net/tracker/?group_id=80719&atid=560790
Bug Tracking,SupportE-mailmailto:leandro@dutra.fastmail.fm
HelpMailing List Info/Archivehttp://lists.sourceforge.net/mailman/listinfo/duro-announce
DeveloperMailing List Info/Archivehttp://lists.sourceforge.net/mailman/listinfo/duro-devel


Software prerequisites

This entry (in part or in whole) was last reviewed on 13 March 2017.



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