Building a Data Diagram
A data diagram is a graphical representation of a model or of part of a model.
In MEGA Database Builder, a data diagram is represented by:
• Entities, which represent the basic concepts (customer, account, product, etc.).
• Associations, which define the relationships between the different entities.
• Attributes, which describe the characteristics of entities and, in certain cases, of associations.
The data diagram also contains multiplicity definitions.
For SQL generation of entities and attributes, see "SQL Identifiers and Options".