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IBM Db2 Database vs SQL Server comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 12, 2025

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

IBM Db2 Database
Ranking in Relational Databases Tools
6th
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
72
Ranking in other categories
No ranking in other categories
SQL Server
Ranking in Relational Databases Tools
1st
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
266
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of February 2025, in the Relational Databases Tools category, the mindshare of IBM Db2 Database is 7.0%, up from 6.5% compared to the previous year. The mindshare of SQL Server is 20.1%, down from 23.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Relational Databases Tools
 

Featured Reviews

SimonHiggins - PeerSpot reviewer
Very scalable with high availability and excellent technical support
The good thing is that there are improvements coming with later function levels for the z/OS Db2. I'd like it if, with the operating system that we've got, z/OS, on the mainframe, it would allow us to refresh the hardware to run Linux dockers on the mainframe. This means this might give us opportunities for different ways of coming into the Db2 environment in the future. We just want a bit more integration with Linux. That said, we are already seeing Linux more readily available on the mainframe environment. Not only have we got the premium operating systems on OS. We can run LPARs on the same mainframe footprint that is also supporting Linux. This is what has improved and made the mainframe environment more competitive. We're also looking at AI for Db2 as well, and machine learning for the future. We know that AI has come out, that we're going to get that, and we're going to evaluate that product next year for Db2. That said, I haven't got any real complaints about Db2 on the mainframe. For the most part, a lot of the problems we have nowadays are to do with communication between the various teams that you would class as stakeholders.
Azizul Haque - PeerSpot reviewer
It has eliminated all kinds of inconsistencies, and it is reliable, secure, and fast
I don't know whether SQL Server can support large organizations where the database size is more than 100 GB. It might be because of SQL Server, or it might be because of the programming of the software vendor, but a lot of people think that it is a problem with SQL Server. It can't handle a large amount of data or large data size. In terms of its usage, about 90% of our applications are running on the SQL Server database. We have around 1,600 users for our software, and all the applications are connected to the SQL Server database.

Quotes from Members

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

Pros

"Its robustness, scalability, availability, and performance are valuable. All these are the major attributes of a relational database for supporting a very high-volume business, and Db2 is very good in all those areas and in all those attributes."
"The most valuable features of this solution are security and stability."
"It has a good, stable performance."
"It is quite a stable solution."
"The solution's security is very tough and impenetrable."
"We are dealing with millions of transactions a month and the performance is very good."
"The most valuable aspect of this solution is its stability. We have never had any problems and have never had to contact technical support."
"The structure is straightforward, consisting of the test file and the logical and physical files. You have one physical file and many logical files related to it."
"SQL Server is a very mature solution."
"It is a simple query language. It is consistent across all versions. If you start with an older version, move to the newer version. The same code will still work."
"Very easy to use, and it's very democratic in the enterprise."
"I have found that SQL Server works very well in the Microsoft Dynamics environment."
"It is stable, and it works okay."
"It's great that the database engine is always on."
"It is quite reliable in cluster configurations and has helped me to reduce downtime and improve SLAs."
"The most valuable feature of SQL Server is that it is easy to set up."
 

Cons

"​Not very solid compared to its competitors' products.​"
"The solution could be more modern and have updated database technology."
"Do not use support. Freely available documentation is a bit weak.​"
"The vendor should offer a free version"
"The licensing fees can be reduced."
"I would like to see better support for advanced analytics."
"The queries can be difficult for beginners because there are so many. I would like to see more use cases for flow analysis that enable us to correlate the flow with events. Adding this feature in a QI format would be good for beginners."
"They could enhance the product's cloud integration and general-purpose database capabilities."
"The solution could offer better integration with other solutions - specifically Microsoft."
"It would be great if we were able to run it on multiple operating systems and not only stick with Windows."
"It is very costly, and that's the reason people are moving away from SQL Server."
"The scalability and the high availability feature can be expanded or improved. Currently, there is a limitation on scalability. A feature similar to the Oracle Diagnostic feature can be included to provide a better user experience."
"It would be ideal if the solution offered better integration capabilities."
"I would like to have the option to use fewer processors for certain tasks, thus reducing the licensing fee."
"The performance is not always the best."
"The performance could improve."
 

Pricing and Cost Advice

"I would rate the pricing a five out of ten. It's not super expensive, but also not cheap."
"The total cost of the solution depends upon the PVU licensing"
"I rate the price of the IBM Db2 Database an eight out of ten."
"We normally handle large size businesses and as far as I am aware, the license is negotiable based on the number of users and the quantitative data."
"The solution's pricing is fine."
"Among Microsoft SQL Server, Oracle, and Db2, Microsoft SQL Server is the cheapest one, and Oracle is the most expensive one. Db2 is in the middle. As compared to SQL Server, its price could go down. It will be good for customers."
"I think that everyone knows that with IBM the standard price is higher than the others."
"Clients are required to purchase a license."
"It's a bit expensive."
"There is a license required for servers and for the POS we use the free version. The free version allows you to have tables and a total database size of approximately 10 GB, which is enough for our requirements."
"The price of SQL Server could be reduced, the license is expensive. We have an annual subscription."
"I would rate the tool's pricing a six out of ten. It is not extremely cheap but also it's not the most expensive product."
"The product's price is reasonable."
"SQL Server is an expensive solution."
"To scale the solution there are additional costs."
"There is a license required for this solution and we pay monthly. The price is reasonable compared to other solutions."
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Top Industries

By visitors reading reviews
Educational Organization
62%
Financial Services Firm
8%
Computer Software Company
4%
Manufacturing Company
3%
Educational Organization
52%
Financial Services Firm
8%
Computer Software Company
6%
Manufacturing Company
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about IBM Db2 Database?
Db2 database scalability and performance capabilities match our database needs. It covers pretty much everything a database administrator or engineer might need.
What is your experience regarding pricing and costs for IBM Db2 Database?
IBM Db2 is an expensive solution. While I am not heavily involved with pricing, additional companies provide capabilities or products like those from BMC, which many installations might also purchase.
What needs improvement with IBM Db2 Database?
The usage of Db2 could be simplified, as it is quite complex and requires substantial knowledge of Db2 and zOS. Modern features are being implemented, but further simplification and the inclusion o...
Would you say the price of SQL Server is high compared to that of similar products?
SQL Server is fairly priced because it has various editions, depending on the number of users, servers, or core packs you are using. If you compare the product to others in this category, the price...
Has using SQL Server helped your organization in any way?
SQL Server has helped my organization through partitioning to distribute the workload, as it splits them up into smaller pieces so the machines can easily deal with it. However, this comes with a h...
Which authentication mode is best for SQL Server?
My company connects through SQL Server authentication. We have company Windows accounts, but we do not want to connect the two, out of security concerns and to keep things separated for our own pur...
 

Comparisons

 

Also Known As

DB2
Microsoft SQL Server, MSSQL, MS SQL
 

Overview

 

Sample Customers

Knorr-Bremse, Mizuho Bank Ltd., Australian Government Department of Defence, SCHWENK Zement, Friedhelm Loh Group, YAZAKI Europe Limited, Ekornes ASA, Baldor Electric, VSN Systemen BV, Lion Brewery (Ceylon) PLC, PLANSEE Group, TE Connectivity, Hansgrohe SE, Openmatics, University of Toronto
Microsoft SQL Server is used by businesses in every industry, including Great Western Bank, Aviva, the Volvo Car Corporation, BMW, Samsung, Principality Building Society, Wellmark Blue Cross and Blue Shield, and the Catholic District School Board of Eastern Ontario.
Find out what your peers are saying about IBM Db2 Database vs. SQL Server and other solutions. Updated: January 2025.
832,237 professionals have used our research since 2012.