How to plan my data properties in OpenBOM Bill of Materials and Catalogs

Oleg Shilovitsky
Oleg Shilovitsky
17 July, 2019 | 2 min for reading
How to plan my data properties in OpenBOM Bill of Materials and Catalogs

Even OpenBOM looks and smells like a spreadsheet, inside OpenBOM manages data using multiple databases. The concept of a spreadsheet is applied to OpenBOM user experience. To manage data, you need to define “properties” in OpenBOM. You can think about them as a database field. OpenBOM is flexible allows you to define, change and delete these properties at any time. So, from the beginning.

OpenBOM Bill of Materials and Catalogs are fundamental data structures managed by OpenBOM. One of the questions I’ve often got in support is related to where to create a property – in BOM or in a Catalog. 

In today’s blog and video, I’d like to explain how to decide about where to create a property – in BOM or Catalog. Check the picture below. This is the data model of BOM and Catalogs. 

As you can see catalog properties are describing data that must remain the same for all instances of the part/assembly (Eg. Unit Cost, Description, etc.). At the same time, variable properties are defined in BOMs. 

The following picture can give you a very simplified idea of how it can be done. 

In the following video, I can give you some idea how to make these planning mostly efficient and how to project your concepts into OpenBOM reference-instance model by defined catalog and BOM properties.

Conclusion

Catalog and BOM model in OpenBOM is really simple but allows you to create a very sophisticated data model. Reference-instance model can be used for any type of BOMs, quantity-based, instance BOMs, engineering, production, planning, etc. You can keep data assigned to reference and instances, while BOM supports parent-child relationships. Together BOM and catalogs are a solid foundation of OpenBOM. 

Register to OpenBOM FREE user subscription and experience OpenBOM model tomorrow.

Best, Oleg

PS. Let’s get to know each other better. If you live in the Greater Boston area, I invite you for a coffee together (coffee is on me). If not nearby, let’s have a virtual coffee session — I will figure out how to send you a real coffee.

Want to learn more about PLM? Check out my Beyond PLM blog and PLM Book website

Related Posts

Also on OpenBOM

4 6
27 March, 2026

If you’ve ever asked yourself, “what type of bill of materials do I actually need?”, you’re not alone. In my...

27 March, 2026

This guide explains the product release process in manufacturing – what it is, how it works, and how PLM software...

27 March, 2026

This guide explains how revision control works in multi-level Bills of Materials (BOMs): what it is, why it’s complex, and...

26 March, 2026

Why CAD, BOM, ERP, Excel, and even PLM don’t actually own your product knowledge. Everyone knows who owns CAD. Engineering....

26 March, 2026

Most engineers understand change management the way it’s been taught for decades: you identify something that needs to change, you...

24 March, 2026

Product lifecycle knowledge is not created in a single system or at a single moment. It emerges across discussions, iterations,...

23 March, 2026

Bill of Materials (BOM) management is one of the most critical and most underestimated aspects of product development. In my...

23 March, 2026

If you work with CAD systems—SolidWorks, Altium, anything in that CAD family—you already know the reflex. Something doesn’t add up....

20 March, 2026

There’s a moment every modern product company eventually hits, and it’s usually not pretty. Someone asks a seemingly simple question...

To the top