An Implementation of Entity-Relationship Diagram Merging

Entity-Relationship model is an abstract way to describe database. During large scale development, each database designer often focuses on designing a particular part of the system, and the model created by each designer may have overlaps. How to efficiently merge these models to construct a larger model that describes the whole system is an interesting problem. This report explains the implementation of an entityrelationship model merge operator that I created for solving this issue. The implementation is based on an algorithm that was proposed earlier. This operator is currently at its first release (release 1.0). Further improvement is required in terms of visualization and inconsistency validation.