Rel version 3.015 now available!

This release of Rel, an implementation of Date & Darwen’s Tutorial D database language, upgrades some dependencies, adds more detailed logging to the DBrowser startup, fixes some issues, and provides a Maven-based build for Rel developers.

The following enhancements have been made:

  • Enhancement: Update to Java 19.
  • Enhancement: Upgraded 3rd party libraries.
  • Enhancement: Added more detailed startup diagnostic logging.
  • Enhancement: Java build uses Maven. Ant and Eclipse not required.

The following issues have been addressed:

  • Fix: A bogus preference key starting with \u0000 may have been inserted into the .rel preferences file. It is removed if present.
  • Fix: Recently-used database list now limited to 25 databases, to prevent startup slowdown and possible resource limit issues.
  • Fix: The DUP_COUNT option for external JDBC-based relvars has been fixed. Previously, it returned incorrect values.

For more information, or to download Rel, go to

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