Skip to main content navigation
parent site logoSite logo

Projects archive / The SQLEDDI environment

Title:The SQLEDDI environment
Authors:Ashley Ward, Chris Roe, Meurig Beynon, Michael Evans, Chris Brown
Type:model, presentation
Funding:PhD - PhD thesis
Short description:Studying the design and implementation of SQL
EM Technologies:tkeden, %eden, %scout, %eddi, %toysql, %sqlzero, %sqlte
Keywords:notation, tool, translator, education
empublic references:eddipTruong1996, agentparserBrown2001, sqleddiBeynon2001, sqleddiBeynon2002
EMpress references:
Web site references:,
Previous locations:

This project provides an extension to the tkeden
environment in which it is possible to study the use of SQL in conjunction
with EDDI, a definitive notation based on relational algebra, as a
relational database query language.

sqleddiWard2003 is much the same as sqleddiBeynon2002 - see that
project for further details about the history of this project.
sqleddiWard2003 was produced in order to clarify parts of sqleddi
operation for the paper "A Computer-Based Environment For The Study Of
Relational Query Languages" by Beynon, Bhalerao, Roe, Ward for
Teaching, Learning and Assessment in Databases LTSN workshop. The
paper is included in the Presentation directory.

In this version of sqleddi, a new Uneddifying Interface has been
added. Additionally, the multiple Run.eden files have been simplified
to just one. %toysql is now available on executing installtoysql();
in Eden.

Also included here is the presentation (written in Eden) used at the
Databases workshop. [Ash]

sqleddiWard2003 is available locally within DCS at /dcs/emp/empublic/projects/sqleddiWard2003
Download sqleddiWard2003.tar.gz
Uncompressed, sqleddiWard2003 is 862.2 Kbytes (in 83 files).
Your download will be smaller as it will be compressed.
Help on extracting the files from the download.
README.xml 2130 01:45 PM Oct 28 2003 01:19 PM Jul 27 2017
Run.eden 76 01:39 PM Oct 28 2003 01:19 PM Jul 27 2017
chrisuneddify.scout 5987 04:57 PM Jul 10 2003 01:19 PM Jul 27 2017
fruits.eddi 709 10:38 AM Nov 02 2001 01:19 PM Jul 27 2017
fruits.sql 1471 07:01 PM Oct 24 2002 01:19 PM Jul 27 2017
screenshot.gif 15516 05:17 PM Jul 10 2003 01:19 PM Jul 27 2017
uneddify.scout 3295 12:23 PM Nov 09 2001 01:19 PM Jul 27 2017
Docs/ 4096 01:46 PM Oct 28 2003 01:19 PM Jul 27 2017
Presentation/ 4096 05:33 PM Jul 22 2003 01:19 PM Jul 27 2017
SQL0source/ 4096 01:01 PM Oct 28 2003 01:19 PM Jul 27 2017

empublic system initially created by Ashley Ward with assistance from Chris Roe and Meurig Beynon.