SDB101 » Modeling Process
 
The notion of conceptual modeling is associated with ontological definitions of a domain (Fonseca et al. 2003). An ontology is the  specification of a conceptualization of a knowledge domain. An ontology is a controlled vocabulary that describes objects and the relations between them in a formal way, and has a grammar for using the vocabulary terms to express something meaningful within a specified domain of interest.
 

Modeling Process

In the design process, three levels of ontologies (formal, domain and application) affect the conceptual modeling.


Ontology
Conceptual Model
Formal Level
Abstraction of formal features of scientific subjects:
geomtry,geography,time,space
Notions behind conceptual modeling:
objects, fields, relationships
Domain Level
Ontology of geographic kinds:
representation, location, topology, geographic information science
OMT-G conceptual model (or Extended E-R model) and notation:
classes, spatial relationships, spatial integrity constraints
Application Level
Demography ontology:
age groups, education levels, gender, income
Demography application conceptual schema:
census tracts, census sectors, cities,states

Última modificación: Wednesday, 9 de November de 2005, 05:52