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DES 1.6.0 Released
From: |
fernan |
Subject: |
DES 1.6.0 Released |
Date: |
Mon, 28 Jul 2008 14:03:28 +0200 |
[Apologies for multiple receptions]
Hello.
This is a mail just for informing that the new release
Datalog Educational System version 1.6.0
http://des.sourceforge.net
has been launched on 28th, July, 2008 and ported to
GNU Prolog 1.3.0
Release notes are attached to the end of this message.
Please, see http://des.sourceforge.net for details.
Best regards.
==============================================================
Fernando Sáenz Pérez
Profesor Titular de Universidad / Associate Professor
Home Page: http://www.fdi.ucm.es/profesor/fernan
Tel: + 34 913947642. Fax: + 34 913947547
Despacho / Office: 435 (4ª planta / 4th floor)
Dept. Ingeniería del Software e Inteligencia Artificial /
Department of Software Engineering and Artificial Intelligence
Universidad Complutense de Madrid
Facultad de Informática
C/Profesor José García Santesmases, s/n
E - 28040 Madrid. Spain
==============================================================
Version 1.6.0 of DES adds to previous version (1.5.0):
Enhancements:
o SQL query language added to the system: DDL (Data Definition
Language), DML (Data Manipulation Language), and DQL (Data Query Language)
o Common database for different query languages. Relations defined via
SQL or via Datalog can be interchangeably accessed by queries in any language
o Pretty-print listings for Datalog programs and SQL statements
o Processing of batch files via the new command /process File
o Display of 'File not found' errors
o Lexicographically ordered listings
o New commands:
§ /datalog Switches to Datalog interpreter
§ /datalog Query Executes a Datalog query
§ /prolog Switches to Prolog interpreter
§ /sql Switches to SQL interpreter
§ /sql Query Executes a SQL query
§ /dbschema Displays the database schema
§ /pretty_print Switch Enables/Disables pretty print
§ /pretty_print Switch Enables/Disables pretty print
§ /process File Processes the contents of File as if they were typed
at the system prompt
Changes:
o Changed some output formatting for the debugger
o Some tweaks on system messages, mainly referring to
safety/computability
o Initial status: Program transformation and time display are disabled
by default
o System status is listed at start-up
o Listings of Datalog rules are ordered
Fixed bugs:
o The debugger in Sicstus-based releases yielded incorrect results
o Asserting/Consulting some unsafe clauses without program
transformation yielded failure, raising an input error /failing to consult
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