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  • License: Freeware
  • Last update: 5 years ago
  • Total downloads: 112
  • Price: Free |
  • Operating system: Linux
  • Publisher: Rene Hartmann
See full specifications

linux default iconDuro Publisher's description

Duro is a relational open-source database library written in C.

Duro is a relational open-source database library written in C. It is based on the principles laid down in the book Databases, Types, and the Relational Model: 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).

Here are some key features of "Duro":

??? Tuples and tables (relvars).
??? 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.

What's New in This Release:

В· Upgraded to Berkeley DB 4.7.
В· Duro D/T now supports CASE and constraints.
В· Added exception handling to Duro D/T.
В· Dropped first argument of CONNECT.
В· The return type is now explicitly passed to funtions which implement read-only operators.
В· Single quotes are now used in data output in Tutorial D form.
В· If a type is not found, NAME_ERROR is raised instead of NOT_FOUND_ERROR.
В· Added limited type implementation functionality to Duro D/T.
В· Added operator GETENV.

System Requirements:

No special requirements.
Program Release Status: Minor Update
Program Install Support: Install and Uninstall

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