August, 5th, 2015
DES 3.11 released with a brand new Datalog debugger.
January, 21st, 2015
DES 3.10 released and capable of tracing and debugging external databases.
December, 1st, 2014
New online manual.
November, 26th, 2014
DES 3.9 released with improved SQL and RA languages, and syntax colouring updated for ACIDE.
July, 30th, 2014
DES 3.8 released with automatic type casting, better SQL to Datalog compilations, and a new ACIDE version 0.16 with improved panels.
April, 28th, 2014
DES 3.7 released with negative assumptions in SQL, compilations to implications, and a new ACIDE version 0.15 with graphical tracers.
March, 12th, 2014
DES 3.6 released with restricted predicates, negative assumptions in Datalog, and a new ACIDE version 0.14.
February, 3rd, 2014
DES 3.5 released with a new ACIDE version 0.13 and several enhancements for SQL, commands, and syntax checking.
January, 22nd, 2014
More than 50K downloads since DES first release.
December, 10th, 2013
Celebrating 10 years since the first public release 1.0.
December, 18th, 2013
DES 3.4 released with a new ACIDE version 0.12 and several enhancements for RA, SQL, safety and constraints.
October, 22nd, 2013
DES 3.3.2 released with several enhancements for modes and SQL, changes and bug fixings.
July, 28th, 2013
DES 3.3.1 released fixing a critical bug, adding modes to unsafe predicates, and enhancing the Datalog debugger.
July, 12th, 2013
DES 3.3 released including a new ACIDE version featuring a database management panel. Also, some performance tweaks, new commands, and several enhancements.
February, 7th, 2013
New distros for Mac OS X Snow Leopard are released, built with SICStus Prolog.
February, 4th, 2013
Uploaded new binaries built with SWI-Prolog for Mac OS X as there was an initialization error.
February, 3rd, 2013
The entire distribution was not available until this day due to hosting problems.
February, 2nd, 2013
DES 3.2 released adding hypothetical Datalog queries, SQL functional dependencies and CHECK clauses, ordering of Datalog and SQL answers.
December, 23th, 2012
Added 64 bit binaries built with SICStus Prolog.
December, 20th, 2012
DES 3.1 released adding deductive query solving for external databases, new SQL and RA features, and a new version of ACIDE running on Windows, Linux and Mac OS’s.
November, 15th, 2012
DES 3.1 beta 1.0 released adding new features and fixing some bugs. Only Windows 32bit distros. A stable release will be ready soon.
September, 19th, 2012
"Tabling with Support for Relational Features in a Deductive Database System", Presented at PROLE2012 (SISTEDES). Best paper award.
May, 10th, 2012
DES 3.0 released with persistency via ODBC connections, a new SQL debugger and relaxed license to LGPL v3.
February, 10th, 2012
Added mailing list.
February, 7th, 2012
“Declarative Debugging of Wrong and Missing Answers for SQL Views”, Accepted for publication in the 11th International Symposium on Functional and Logic Programming (FLOPS 2010).
January, 9th, 2012
Reworked web site.
January, 3rd, 2012
DES 2.7 released with Extended Relational Algebra processor, switchable multi-line input, and SQL extensions.
October, 26th, 2011
DES 2.6 released with SQL hypothetical queries, top-n SQL and Datalog queries, new commands and syntax error enhancing.
September, 14th, 2011
Releases for MS Windows 64bit built with SWI-Prolog 5.10.5, and Mac OS X Snow Leopard built with SWI-Prolog 5.10.4 are also available.
September, 13th, 2011
DES 2.5 released with a textual API (TAPI) for communication with external programs, a bundle of new commands and SQL statements, type inferencing for SQL queries, and new ports.
July, 7th, 2011
DES 2.4 released with safety and computability revisited for metapredicates, enhanced syntax error reporting, and a new GUI version: ACIDE 0.8.
May, 24th, 2011
DES 2.3 released with a SQL declarative debugger, Datalog distinct operator and SQL distinct clause for projection list and aggregates.
March, 25th, 2011
Stand-alone executables for MacOSX Snow Leopard (built with SWI-Prolog) and Linux (built under Ubuntu 10.04.1 with SICStus Prolog) uploaded. Added instructions on how to build binaries with SICStus Prolog, and updated instructions for SWI-Prolog.
March, 24th, 2011
DES 2.2 released with enhanced type system, connections to ODBC data sources and new ports to SICStus Prolog 4.2.0 and Ciao Prolog 1.13.0.
November, 30th, 2010
DES 2.1 released with strong integrity constraints and enabled access from SQL statements to Datalog relations via type constraints.
October, 7th, 2010
DES 2.0.1 SICStus source version patched Datalog queries against ODBC connections (no advertisements were made for this release as it was a minor one).
September, 22nd, 2010
DES 2.0.1 executable for Mac OS X Leopard (32bit, Intelx86).
(Easy) Instructions on how to build your own executable.
ODBC connections successfully tested on Ubuntu 10.04.1.
Updated list of Publications.
September, 13th, 2010
DES 2.0.1 patches to SWI source distributions in order to support SWI-Prolog 5.10.1 (no advertisements were made for this DES release as it was a minor one).
August, 31st, 2010
DES 2.0 released, allowing access to relational DBMS via ODBC and including Datalog and SQL query tracers.
March, 17th, 2010
DES 1.8.1 released, fixing errors in the binary distributions.
December, 21st, 2009
“Applying Constraint Logic Programming to SQL Test Case Generation”, Accepted for publication in the 10th International Symposium on Functional and Logic Programming (FLOPS 2010).
December, 18th, 2009
DES 1.8.0 released with a more mature test case generator
October, 30th, 2009
DES 1.7.0 released with Datalog and SQL aggregates, types, constraints and test case generation
March, 10th, 2009
DES 1.6.2 released with null values, Datalog outer join operators and SQL outer join clauses
November, 10th, 2008
DES 1.6.1 released with arithmetic expressions and subqueries in SQL comparisons
July, 28th, 2008
DES 1.6.0 released with SQL integrated
December, 30th, 2007
DES 1.5.0 released with new features and Linux executable fixed
September, 2nd, 2007
DES 1.4.0 released and equipped with arithmetic
August, 20th, 2007
ACIDE 0.6 released
June, 4th, 2007
ACIDE 0.5 released
May, 18th, 2007
ACIDE 0.4 released
ACIDE 0.4 tested with DES 1.3.0. No changes are now required on DES
April, 25th, 2007
ACIDE 0.3 released
April, 16th, 2007
ACIDE 0.2 released
April, 9th, 2007
ACIDE 0.1 released
May, 2nd, 2007
DES 1.3.0 released and equipped with a declarative debugger
March, 16th, 2007
ACIDE 0.0 released, a configurable integrated development environment tested for DES
February, 22th, 2007
Emacs Development Environment released, which provides an integration of DES into Emacs
February, 9th, 2007
DES 1.2.0 released with many improvements
December, 20th, 2006
DES 1.1.2 released, fixing some bugs
February, 21st, 2005
DES 1.1.1 released, containing a Linux executable version
March, 4th, 2004
DES 1.1 released and published by sourceforge.net
December, 10th, 2003
DES 1.0 launched