July 2002        Issue: 26

Journal of Conceptual Modeling
www.inconcept.com/jcm

Solution for the May 2002 Analysis Problem:
by Dr. John Sharp 

Solution for the May 2002 Analysis Problem:

Analysis results (only tables and keys are needed):

Two tables exist: AB and AC (or BC)

Key exists over A and B in AB and A in AC (or B in BC)

Here is the real world example that this problem was developed from:

Customer with customer number 234 having the Employer Identification Number 48-1234567 has Joe Smith as an approved buyer.

The rules are:

Customer number identifies a customer.

Employer Identification Number identifies a customer.

Customer with customer number has the Employer Identification Number.

Customer with customer number with approved buyer identifies an approved buyer for a customer.

Dr. John Sharp is the founder and principal consultant for Sharp Informatics.Before starting Sharp Informatics in 1997 he was employed by Sandia National Laboratories in Albuquerque, NM for 18 years. While at Sandia he held staff and management positions in all areas of information technology, including analysis, design, implementation, maintenance, information architecture, data administration, and information technology research. He has worked closely with Prof. Shir Nijssen of The Netherlands to improve the NIAM analysis methodology. Dr. Sharp is the creator of the first information analysis procedure known to be mathematically precise.This procedure reformulates the usual (imprecise and inaccurate) statements and examples from a subject area into verified fact types. The output of this productivity enhancing process (a set of information requirements) is compatible with all the latest and most productive database application creation tools. John is the editor of the international standard for conceptual schemas. He has co-chaired two international conferences on natural language modeling and he has presented numerous papers and seminars at professional conferences.

Contact information:

Dr. John Sharp
Sharp Informatics
1604 Vassar SE
Albuquerque, NM 87106
sharp@sharp-informatics.com
505-243-1498
fax 505-248-0345
http://www.sharp-informatics.com