How To Make an Object Role Model (ORM) Diagram

Show the relationships between objects in a database

Part 1: What is Object Role Model (ORM) Diagram?

Object Role Model (ORM) Diagrams are used to show the relationships between objects in a database. ORM Diagrams offers a conceptual approach to database modelling through such concepts as objects and roles.

ORM Diagrams and ER Diagrams are both used for modelling database structures. One benefit ORM Diagrams have over ER Diagrams is that they are better when it comes to evolving a design. ORM Diagrams also tend to provide far more depth and detail than ER Diagrams.

Part 2: How to Make an Object Role Model (ORM) Diagram Effortlessly?

How to make an object role model (ORM) diagram easily? Using EdrawMax to create your own object role model (ORM) diagram.

Step 1: Open EdrawMax desktop software or EdrawMax web-based application.

Step 2: Navigate to [New]>[Database Modeling]>[ORM Diagram]

Open ORM diagram

Step 3: Select one object role model (ORM) diagram template to edit on it or click the [+] sign to start from scratch. Also, you can use massive object role model (ORM) diagram symbols and elements from libraries in left menu to customize your diagram.

Choose an object role model (ORM) diagram template in EdrawMax

Step 4: Once finished your creation, you can export the file in multiple formats, including Graphics, PDF, editable MS Office file, SVG and Visio vsdx file.

Save or export ORM diagram in EdrawMax

Step 5: Besides, you can share your diagram with others via social media and web page. Or publish your diagram in EdrawMax template gallery to show your work with others.

share and publish ORM diagram

Part 3: Object Role Model (ORM) Diagram Examples

Example1: Cycle ORM Diagram

ORM diagrams are an incredibly effective way to explore domain concepts. It depicts objects (entity types), the relationships (fact types) between them, the roles that the objects play in those relationships, and constraints within the problem domain. A Cycle ORM is the simplest form as the architecture separates entities’ representation.

Cycle ORM Diagram

Example2: Basic Object-Role Modeling

The following ORM diagram represents the object-role model overview with an elaborative description of ORM semantics. Symbols and notations graphically represent the entities and the relationships between them.

Basic ORM Diagram

Part 4: Conclusion

According to this article, there are mainly three parts to illustrate what is ORM diagram, to tell you how to create ORM diagrams and to show you some ORM diagram examples. Generally speaking, the ORM diagram is a diagram which can be used for data modelling in software engineering.

EdrawMax is an easiest all-in-one diagramming tool, you can create ORM diagram and any other type diagram with ease! With substantial ORM diagram symbols and cliparts, making ORM diagram could be as simple as possible. Also, it supports to export your work in multiple formats and share your work with others. Get started to create your ORM diagrams now!

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