Analysis of binary relationships within ternary relationships in ER modeling
In this paper, we discuss which binary relationship cardinalities are permitted within ternary relationships, during ER modeling. We develop...
Searching for compositions in ER schemes
Absence of redundancy is an important quality of ER schemata. Adequate treatment of derivable data, in addition to observing...
Using conceptual graph theory to support schema integration
Two major problems in schema integration are to identify correspondences between different conceptual schemas and to verify that the...
Enhancing the quality of conceptual database specifications through validation
In this article, we present a validation approach and method to support the development of database applications. We explain...
Integration of heterogeneous object schemas
In a heterogeneous database system which consists of object databases, a global schema created by integrating schemas of the...
Functional dependencies generalized for temporal databases that include object-identity
Normalization theory for relational databases is based on the construct of functional dependency. In this paper, we extend the...
The role of meta models in federating system modelling techniques
Given the large number of system modelling techniques currently available, and the continual need to develop new and improved...
Temporal extensions to a uniform behavioral object model
We define temporal extensions to a uniform, behavioral and functional object model by providing an extensible set of structural...
TOOSQL- a temporal object-oriented query language
This paper proposes a temporal, object-oriented query language called TOOSQL which has an SQL-like syntax and compares it with...
A taxonomy for schema versioning based on the relational and Entity Relationship Models
Recently there has been increasing interest in both the problems and the potential of accommodating evolving schema in databases,...
