IBM Db2 Database vs kdb+ comparison

IBM and Kx Systems are both solutions in the Relational Databases Tools category. IBM is ranked #6 with an average rating of 8.2, while Kx Systems is ranked #33. IBM holds a 6.8% mindshare in SQL, compared to Kx Systems’s 0.9% mindshare. Additionally, 90% of IBM users are willing to recommend the solution, compared to 100% of Kx Systems users who would recommend it.

IBM Db2 Database

Read 75 IBM Db2 Database reviews

4,208 Views
4,082 Comparison Views

90% willing to recommend

kdb+

Read 1 kdb+ review

505 Views
455 Comparison Views

100% willing to recommend

IBM Db2 Database

kdb+

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Executive Summary

We performed a comparison between IBM Db2 Database and kdb+ based on real PeerSpot user reviews.

Find out what your peers are saying about Microsoft, Oracle, SAP and others in Relational Databases Tools.

To learn more, read our detailed Relational Databases Tools Report (Updated: March 2026).

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Relational Databases Tools

March 2026

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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

6.7

Number of Reviews

Ranking in other categories

No ranking in other categories

kdb+

Ranking in Relational Databases Tools

33rd

Average Rating

9.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of March 2026, in the Relational Databases Tools category, the mindshare of IBM Db2 Database is 6.8%, up from 6.8% compared to the previous year. The mindshare of kdb+ is 0.9%, up from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Relational Databases Tools Mindshare Distribution
Product	Mindshare (%)
IBM Db2 Database	6.8%
kdb+	0.9%
Other	92.3%

Relational Databases Tools

Featured Reviews

reviewer2708292

Associate Director, Data Architecture at a financial services firm with 10,001+ employees

Support improves setup and maintenance while pricing influences decision

If you have a similar use case and the same deal with IBM as our company, it is definitely a good option and choice. The company I work with has more than 50,000 people and more than 500 support staff. We are not locked into one database vendor. We typically work with multiple database vendors simultaneously, selecting the top choice based on the deals we make and other considerations. We do not use IBM Db2 Database related to AI at this moment because our AI project PLC is still very small scale. We may consider it in the future if we have enough scale. Overall rating for IBM Db2 Database is 8.5 out of 10.

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Nitin Garg

Vice President - Financial Services at Evalueserve

An easy-to-deploy solution that can be used for data ingestion and usage

I work for a fintech company where we create several strategies generally built on finance data, which are like one-time series data. We deal with huge bulk data on a daily basis, and we use kdb+ for data ingestion and usage The most valuable feature of kdb+ is the speed at which it returns the…

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Quotes from Members

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

Pros

"IBM Db2 was much cheaper as a package than using other products. This is because IBM supplied a package with its product. It's an application. So it was much more efficient and a stronger competitor in that regard."

"The most valuable feature of the IBM Db2 Database is security."

"The performance of the solution is valuable."

"The most valuable feature is PowerPC support."

"The solution's initial setup is straightforward."

"I can easily export that to further work on it in Snowflake."

"IBM DB2 pureScale Feature is valuable."

"DB2 is a very good, reliable and solid database server with many functionalities."

More IBM Db2 Database pros

"The solution returns data quickly, and data retrieval is fast in kdb+."

Cons

"They should simplify the management of Db2 as a relational database system. There should be the simplification of management. This is probably one of the most important asks for being successful 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."

"The solution's UI hasn't been upgraded. The solution’s UI is an area to improve because the solution was developed long ago."

"The usage of Db2 could be simplified, as it is quite complex and requires substantial knowledge of Db2 and zOS."

"The capabilities of this solution could improve."

"The price should be lower."

"When I look at Microsoft SQL Server, SQL Server provides me with better tools for database management."

"The solution could improve by providing more integration."

More IBM Db2 Database cons

"The solution should have a more user-friendly user interface."

Pricing and Cost Advice

"The total cost of the solution depends upon the PVU licensing"

"It is expensive when compared to other products."

"The solution's pricing is fine."

"Clients are required to purchase a license."

"It is expensive."

"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."

"If I consider the price of IBM Db2 Database, I would say there are cheaper products in the market."

"They are competitive and honest (compared to how peer firms approach licensing conversations). "

More IBM Db2 Database pricing and cost advice

Information not available

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Top Industries

By visitors reading reviews

Financial Services Firm

17%

Manufacturing Company

10%

Government

Computer Software Company

Financial Services Firm

45%

Retailer

Comms Service Provider

Energy/Utilities Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	20
Midsize Enterprise	13
Large Enterprise	48

No data available

Questions from the Community

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.

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What needs improvement with IBM Db2 Database?

The IBM Db2 Database is a good solution, but now there is a high maintenance charge. The IBM Db2 Database needs improved support, and there are many difficulties in using it. We tend to use the clo...

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What is your primary use case for IBM Db2 Database?

I use the IBM Db2 Database for development applications. Many clients in our company have business applications currently working on it.

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Comparisons

SQL Server vs IBM Db2 Database

Compared 39% of the time

Oracle Database vs IBM Db2 Database

Compared 15% of the time

Teradata vs IBM Db2 Database

Compared 7% of the time

SAP HANA vs IBM Db2 Database

Compared 7% of the time

MySQL vs IBM Db2 Database

Compared 5% of the time

More IBM Db2 Database Competitors

SQL Server vs kdb+

Compared 22% of the time

SingleStore vs kdb+

Compared 21% of the time

Oracle Database In-Memory vs kdb+

Compared 16% of the time

Oracle Database vs kdb+

Compared 15% of the time

MariaDB vs kdb+

Compared 14% of the time

More kdb+ Competitors

Product Reports

Buyer's Guide

IBM Db2 Database

March 2026

Download IBM Db2 Database product report

Buyer's Guide

Relational Databases Tools

March 2026

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Also Known As

DB2

No data available

Overview

DB2 Enterprise for Linux, UNIX, and Windows is the ideal data server for the most demanding workloads. New XML support is designed to help firms minimize the time and effort it takes to persist and use their XML data reducing development costs and improving business agility.

IBM

Kx is the world leader in high-performance, in-memory computing, streaming analytics and operational intelligence. The company’s focus is on delivering the best possible performance and flexibility for high-volume, data-intensive analytics and applications. Kx software includes the time-series database kdb+ with a built-in programming language called q, and a robust suite of visualization tools built on top of the database platform providing business intelligence for all users.

Kx Systems

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

UniCredit, AIRBUS

Buyer's Guide

Relational Databases Tools

March 2026

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