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UNICOM System Architect vs erwin Data Modeler comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Mar 1, 2026

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

erwin Data Modeler
Ranking in Enterprise Architecture Management
1st
Average Rating
8.2
Reviews Sentiment
5.8
Number of Reviews
68
Ranking in other categories
Business Process Design (4th), Data Governance (11th)
UNICOM System Architect
Ranking in Enterprise Architecture Management
22nd
Average Rating
6.0
Number of Reviews
2
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of November 2026, in the Enterprise Architecture Management category, the mindshare of erwin Data Modeler is 8.6%, up from 8.2% compared to the previous year. The mindshare of UNICOM System Architect is 1.6%, up from 1.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Architecture Management Mindshare Distribution
ProductMindshare (%)
erwin Data Modeler8.6%
UNICOM System Architect1.6%
Other89.8%
Enterprise Architecture Management
 

Featured Reviews

SR
Director, Analytics at a consultancy with 10,001+ employees
Structured data modeling has accelerated AI-driven customer insights and cloud migrations
One feature that I wish erwin Data Modeler could improve is how user experience becomes much more intuitive, particularly when navigating large models or reviewing changes over time. Easier model exploration, clear visibility into differences between versioning, and practical documentation for use cases could help users work more effectively. I would also welcome the capability to have integrations with other platforms where the blueprint can be exchanged seamlessly without having to do an export and an import process. This would also help in bringing in the AI capability, which can assist in better positioning erwin Data Modeler not just as a tool for designing and documenting data models, but also as part of the broader data architecture and development lifecycle. Regarding erwin Data Modeler's AI capabilities, there is an opportunity to enhance user experience from a governance standpoint, supporting tracking model changes, maintaining audit trails, and managing role-based access while enforcing consistent modeling standards across teams would be a value-added feature, particularly in a large-scale environment. It would also be beneficial to have better visibility into sensitive data attributes and their relationships to govern the requirements, including privacy and access controls. As organizations increasingly adopt AI development, integrating these governance and security considerations into the model and implementing workflows could also help teams work more effectively while maintaining appropriate oversights. Regarding erwin Data Modeler's AI capabilities, there is still room for improvement regarding accuracy and reliability of output as large language models need clear instructions. There is room for growth because business requirements keep changing, relationships keep changing, and the capability to identify inconsistencies, missing relationships, or incorrect definitions are areas where it can improve. This is not to say that the current features are not good enough; they are excellent, but there is definitely room to catch up on AI changes. This is particularly important when modeling using blueprints inputted via AI assistant programs, and when an error occurs in the original model, it could carry over into a generated implementation. That is one of the experiences I faced when working on a project for the Adobe Experience Platform. I experience some integration failures often with erwin Data Modeler, but there is documentation that we can look up that helps resolve these bugs. The new integration changes on our end sometimes pose a challenge, but the process is generally seamless, and the support available makes it much easier for us to troubleshoot any challenges we might face. Managing data across different environments, such as traditional databases, NoSQL, big data, and cloud platforms with erwin Data Modeler presents the biggest challenge of translating from a traditional database to a non-SQL database. These challenges are primarily based on the structure of the data model. Overall, there are external tools that help us in translating that, and I would love to add this as a feature to simplify the process and reduce the complexity of using external extensions for making those changes or guiding through the process.
reviewer1261290 - PeerSpot reviewer
Project Manager at a government with 10,001+ employees
Useful for creating build-outs and architecture views, but requires a publisher add-on for some detailed reports
I don't use the tool or know a lot. It is going to have some shortcomings. When it comes down to publishing, we just found out this week that they actually have a publisher add-on. So, what we were trying to publish was not giving a detailed report about the architecture, views, etc. I just wish they had sent these to UNICOM and contacted them about add-on features for the publishing part of the tool.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"There is absolutely no problem with the stability."
"Drag-and-drop data modeling and reverse engineering out of databases are the most valuable features of erwin Data Modeler by Quest."
"It supports a wide variety of databases, including the latest ones. We have chosen to go for a cloud-based database, and it supports that, which is very useful."
"Out of all of the modeling tools, erwin is a 10 out of 10."
"The most valuable features are the ability to reverse engineer and do model comparison. With the reverse engineering, I can understand the databases from third-party products. With the model comparison, I can track the differences between two versions of the same database."
"One of the best aspects of the tool is its reverse engineering capability."
"Erwin is by far the best tool I've ever used."
"erwin Data Modeler has positively impacted my organization by allowing us to implement the data architecture with the data strategy about six to eight years ago, since it allowed us to have a single language and implement new Nissan standards, naming conventions, constraints, and features."
"It is useful for creating build-outs and architecture views and for publishing reports and stuff like that for different programs."
"It has good end-to-end metamodel interrelationships."
 

Cons

"I find the UI very clunky and very difficult to use. If I add columns to a table the whole workflow could be so much easier. I get frustrated using it. I've tried other tools. I've tried to get off of erwin a few times. I always come back to it because every tool has its own set of problems, and it seems like if I have to pick my poison, I stay with erwin. But so many things that are clunky with it."
"I would like to have more data sources from other, different vendors. In recent years, the vendor has reduced the number of data sources, and I would like to have more data sources for every brand. For example, with Oracle, I would like to have compatibility for many versions, including old ones, not just the most recent."
"erwin Data Modeler is very complex and unnecessarily complicated."
"Sometimes when I want to open the attribute editor, it stops working and the whole application freezes."
"What I did not like was that sometimes while I was creating relations, I was not getting errors. The errors only appeared when I tried to upload the model into a new database, which took a lot of time because I was creating a model, reproducing XML, and then trying to add the XML in the database."
"I believe the first area where erwin Data Modeler could improve is in conceptual modeling; currently, there is no way to create a conceptual model."
"I felt that erwin Data Modeler is a bit of an outdated tool."
"The Bulk Editor needs improvement. If you had something that was a local model to your local machine, you could connect to the API, then it would write directly into the repository. However, when you have something that is on the centralized server, that functionality did not work. Then, you had to export out to a CSV and upload up to the repository. It would have been nice to be able to do the direct API without having that whole download and upload thing. Maybe I didn't figure it out, but I'm pretty sure that didn't work when it was a model that sat on a centralized repository."
"They need to add reports that show the enterprise architecture perspectives, and the dashboards should be comfortable for the senior enterprise architects so that they can view the complete landscape."
"I don't use the tool or know a lot. It is going to have some shortcomings. When it comes down to publishing, we just found out this week that they actually have a publisher add-on. So, what we were trying to publish was not giving a detailed report about the architecture, views, etc. I just wish they had sent these to UNICOM and contacted them about add-on features for the publishing part of the tool."
"UNICOM System Architect is quite a dated tool. The usability needs to be improved."
 

Pricing and Cost Advice

"The solution is expensive."
"Though the solution is not cheap, it's worth the money."
"This company had bought the license for three years, and it's not an individual license. While you can buy a license for each individual, that would be very expensive. There is something called concurrent licenses where you can purchase licenses in bulk and 15 to 20 people can access the license and model. Concurrent licenses are scalable to the number of users and are proportional to the cost."
"There is either a one-year or three-year license. It is not a pay-as-you-go license like a SaaS solution. It’s more of a traditional licensing. They are a little bit on the pricier side."
"erwin Data Modeler by Quest is an expensive solution."
"erwin is expensive compared to other solutions. We are paying almost $6,000 per seat a month."
"The pricing of the solution is cheap. I rate the pricing a five out of ten."
"The primary reasons that erwin was selected were that it was much more affordable for us [than Embarcadero] and it was easily maintainable."
"I don't remember the price. It is a different cost for just buying it, and then you have a maintenance cost, which you need to renew every year."
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Top Industries

By visitors reading reviews
Financial Services Firm
14%
Outsourcing Company
9%
Manufacturing Company
8%
Marketing Services Firm
6%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise4
Large Enterprise61
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for erwin Data Modeler by Quest?
My experience with erwin Data Modeler's pricing and setup costs shows it to be on the expensive side; the licensing fees reflect this higher cost, which results in fewer users adopting the tool.
What needs improvement with erwin Data Modeler by Quest?
The UI of erwin Data Modeler could be improved. It could be cleaner, as the current setup sometimes confuses users searching for specific features. Streamlining options and removing unnecessary ele...
What is your primary use case for erwin Data Modeler by Quest?
My main use case for erwin Data Modeler involves designing a logical and conceptual model, and physicalized model. I typically use it for creating tables, establishing relationships between tables,...
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Also Known As

erwin DM
No data available
 

Overview

 

Sample Customers

 Premera, America Honda Motors, Aetna, Kaiser Permanente, Dental Dental Cali, Cigna, Staples
Apple, Facebook, Google, HSBC, PayPal
Find out what your peers are saying about UNICOM System Architect vs. erwin Data Modeler and other solutions. Updated: November 2026.
920,769 professionals have used our research since 2012.