Rel version 1.0.5 Beta now available

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Dave
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Joined: Sun Nov 27, 2005 7:19 pm

Rel version 1.0.5 Beta now available

Post by Dave » Sun Nov 07, 2010 11:57 am

This version of Rel -- an implementation of Date & Darwen's "Tutorial D" database language -- is a maintenance release featuring two bug fixes:

1. A bug in the way relation literals were parsed allowed the following...

Code: Select all

	RELATION {x INTEGER, y INTEGER} {
		TUPLE {x 1, z 1}
	}
...to be accepted and yield:

Code: Select all

	RELATION {x INTEGER, y INTEGER} 
		TUPLE {x 1, y 1}
	}
This has been corrected.

2. Due to a change in the way the third-party storage engine (Oracle Berkeley Java DB) generated exceptions -- introduced in Java DB version 4.0.71 -- Rel did not correctly handle an exception related to transactions and could wind up throwing its own internal exceptions. This was especially likely when attempting to drop a constraint or relvar immediately after a Rel error message had been generated. This has been corrected.

For more information, or to download Rel, see http://dbappbuilder.sourceforge.net/Rel.html

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