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  1. ACM SIGMIS Database: the DATABASE for Advances in Information Systems (DATB)
  2. Volume 33
  3. Volume 33, Issue 3, Summer 2002
  4. CODASYS
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Volume 48
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Volume 33
Volume 33, Issue 4, Fall 2002
Volume 33, Issue 3, Summer 2002
From the Editors
From the Chair
Ethics and information systems
A laboratory study of consumers' preferences and purchasing behavior with regards to software components
Reflections on the dimensions of trust and trustworthiness among online consumers
CODASYS
Volume 33, Issue 2, Spring 2002
Volume 33, Issue 1, Winter 2002
Volume 32
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CODASYS:a consulting tool for novice database designers

Content Provider ACM Digital Library
Author Batra, Dinesh Antony, Solomon R.
Abstract The paper describes the main features of a prototype tool CODASYS (COnceptual modeling tool for DAtabase SYStems), which purports to help novice designers engaged in conceptual data modeling. It is well known that conceptual data modeling is an error-prone process for novice database designers. The tool assists a designer in developing an entity-relationship diagram that can be translated to a normalized relational representation, free of derived dependencies. We first discuss a set of requirements for the tool that is based on achieving normal forms, on preventing data modeling errors, and on a theoretical foundation. We then discuss how the tool achieves the four normal forms and prevents common database errors such as incorrect degree, incorrect connectivity, and derived relationships. Further, we provide a cognitive framework for understanding novice error behavior and elaborate on how CODASYS addresses cognitive strain in database design. Next, we present the features of the tool and, with the help of flowcharts, discuss how these features have been implemented using a rule-based approach. It may be noted that empirical studies have been conducted to test the efficacy of the tool and have indicated significant improvement in novice designer performance.
Starting Page 54
Ending Page 68
Page Count 15
File Format PDF
ISSN 00950033 15320936
DOI 10.1145/569905.569911
Journal ACM SIGMIS Database: the DATABASE for Advances in Information Systems (DATB)
Volume Number 33
Issue Number 3
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2007-02-28
Publisher Place New York
Access Restriction One Nation One Subscription (ONOS)
Subject Keyword Human error Database design Expert system Entity-relationship Problem solving Relational Novice designers Patterns Consulting system
Content Type Text
Resource Type Article
Subject Management Information Systems Computer Networks and Communications
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