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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

"The most valuable features are being able to visualize the data in the diagrams and transform those diagrams into physical database deployments. These features help, specifically, to integrate the data. When the source data is accumulated and modeled, the target model is in erwin and it helps resolve the data integration patterns that are required to map the data to accommodate a model."
"erwin Data Modeler's ability to generate database code from a model for a wide array of data sources saves time in development, as utilizing the solution allows me to accomplish tasks in minutes compared to the extended time required for manual processes."
"The solution's ability to compare and synchronize data sources with data models is fantastic."
"Erwin Data Modeler is well organized, and the screen layout is intuitive."
"The principal feature that I liked is that the solution has a very graphic interface."
"Any tool will do diagramming but I think the ability to put the stuff up in a graphical fashion, then think about it, and keep things consistent is what's valuable about it. It's too easy when you're using other methods to not have naming consistent standards and column consistent definitions, et cetera."
"The product lets us import different types of models from various databases."
"My favorite feature of erwin Data Modeler is that we can export and import tables directly from the databases, and it is easy to map from table to table and column to column."
"It has good end-to-end metamodel interrelationships."
"It is useful for creating build-outs and architecture views and for publishing reports and stuff like that for different programs."
 

Cons

"I love the product. I love the ability to get into the code, make it automated, and make it do what I want. I would like to see them put some kind of governance over the ability to make changes to the mart tables with the API, so that instead of just using the modeler's rights to a table -- it has a separate set of rights for API access. That would give us the ability to put governance around API applications. Right now a person with erwin and Excel/VBA has the ability to make changes to models with the API if they also have rights to make changes to the model from erwin. It's a risk."
"It would be nice to have it on the Linux platform, not just Windows. If they can support Linux, there would be a huge market for it."
"This is a very complex product."
"It has a very steep learning curve, limited support for NoSQL or streaming systems, and potentially a high licensing cost."
"The reverse engineering in Oracle Databases needs improvement, as there are issues."
"Right now a person with erwin and Excel/VBA has the ability to make changes to models with the API if they also have rights to make changes to the model from erwin. It's a risk."
"Regarding improvements, I have noticed some slowness in erwin Data Modeler, and if it could be made faster, that would be great."
"I think erwin Data Modeler could be improved when I have very large Oracle schemas."
"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."
"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."
 

Pricing and Cost Advice

"Though the solution is not cheap, it's worth the money."
"erwin Data Modeler by Quest is an expensive solution."
"The price should be lower in order to be on the same level as its competitors."
"The price of erwin Data Modeler is very expensive, in particular for this part of the world."
"erwin has this option where you pay a one-time fee and you have the license for six years, which makes sense because I don't upgrade my database engine every other year. I have an application that depends on it. This is something weird about PowerDesigner. There are no additional costs beyond the standard licensing fee."
"Pricing is very high compared to any other product."
"It is not a very expensive solution. Only the licensing and maintenance fee needs to be paid."
"An issue right now would be that erwin doesn't have a freely available browser (that I am aware of) for people who are not data modelers or data engineers that a consumer could use to look at the data models and play with it. This would not be to make any changes, but just to visually look at what exists. There are other products out there which do have end user browsers available and allow them to access data models via the data modeling tool."
"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.