[Home](https://www.selecthub.com/) \> [Relational Databases](https://www.selecthub.com/c/relational-database-solutions/) \> [PostgreSQL](https://www.selecthub.com/p/relational-database-solutions/postgresql/) \> PostgreSQL vs IBM DB2 # PostgreSQL vs IBM DB2 Last Updated: May 4th, 2026 Our analysts compared [PostgreSQL](https://www.selecthub.com/p/relational-database-solutions/postgresql/) vs [IBM DB2](https://www.selecthub.com/p/relational-database-solutions/ibm-db2/) based on data from our 400+ point analysis of [Relational Databases](https://www.selecthub.com/c/relational-database-solutions/), user reviews and our own crowdsourced data from our [free software selection platform](https://www.selecthub.com/about/start-free-selection-project-site/?category=Relational Databases&cta=relational-database-solutions). [Overview](#product-overview) [Pricing](#product-pricing) [Our Review](#product-analyst-summary) [User Ratings](#user-sentiment-section) [Features](#product-benefits-features) [Analyst Ratings](#analyst-rating-section) [Comparison Charts](#product-comparison-charts) [Screenshots](#product-screenshots) Remove Add to Compare [![PostgreSQL Software Tool](https://cdn.selecthub.com/products/9554b1e815bd9412c45cf4cc459288bc-99b50b4e9b2285d245947dfe0f380ba3/resources/normal/logo.png?1729566032)](https://www.selecthub.com/p/relational-database-solutions/postgresql/) Remove Add to Compare [![IBM DB2 Software Tool](https://cdn.selecthub.com/products/89f0fd5c927d466d6ec9a21b9ac34ffa-8c0a9abe88dccc0177aff2648bfc8b12/resources/normal/logo.png?1729564751)](https://www.selecthub.com/p/relational-database-solutions/ibm-db2/) [ ![Product Awards](https://www.selecthub.com/display/images/awards_badge.svg) ](#awards-section) [Get Free Demo](https://pmo.selecthub.com/get-product-demo/?category=Relational+Databases&product%5Fname=PostgreSQL&product%5Flogo=https%3A%2F%2Fd3uimxdj41cg3o.cloudfront.net%2Fproducts%2F9554b1e815bd9412c45cf4cc459288bc-99b50b4e9b2285d245947dfe0f380ba3%2Fresources%2Fnormal%2Flogo.png%3F1729566032) [Demo](https://pmo.selecthub.com/get-product-demo/?category=Relational+Databases&product%5Fname=PostgreSQL&product%5Flogo=https%3A%2F%2Fd3uimxdj41cg3o.cloudfront.net%2Fproducts%2F9554b1e815bd9412c45cf4cc459288bc-99b50b4e9b2285d245947dfe0f380ba3%2Fresources%2Fnormal%2Flogo.png%3F1729566032) [Request Pricing](https://pmo.selecthub.com/get-product-pricing/?category=Relational+Databases&product%5Fname=PostgreSQL&product%5Flogo=https%3A%2F%2Fd3uimxdj41cg3o.cloudfront.net%2Fproducts%2F9554b1e815bd9412c45cf4cc459288bc-99b50b4e9b2285d245947dfe0f380ba3%2Fresources%2Fnormal%2Flogo.png%3F1729566032&price=1) [Pricing](https://pmo.selecthub.com/get-product-pricing/?category=Relational+Databases&product%5Fname=PostgreSQL&product%5Flogo=https%3A%2F%2Fd3uimxdj41cg3o.cloudfront.net%2Fproducts%2F9554b1e815bd9412c45cf4cc459288bc-99b50b4e9b2285d245947dfe0f380ba3%2Fresources%2Fnormal%2Flogo.png%3F1729566032&price=1) [Get Free Demo](https://pmo.selecthub.com/get-product-demo/?category=Relational+Databases&product%5Fname=IBM%2BDB2&product%5Flogo=https%3A%2F%2Fd3uimxdj41cg3o.cloudfront.net%2Fproducts%2F89f0fd5c927d466d6ec9a21b9ac34ffa-8c0a9abe88dccc0177aff2648bfc8b12%2Fresources%2Fnormal%2Flogo.png%3F1729564751) [Demo](https://pmo.selecthub.com/get-product-demo/?category=Relational+Databases&product%5Fname=IBM%2BDB2&product%5Flogo=https%3A%2F%2Fd3uimxdj41cg3o.cloudfront.net%2Fproducts%2F89f0fd5c927d466d6ec9a21b9ac34ffa-8c0a9abe88dccc0177aff2648bfc8b12%2Fresources%2Fnormal%2Flogo.png%3F1729564751) [Request Pricing](https://pmo.selecthub.com/get-product-pricing/?category=Relational+Databases&product%5Fname=IBM%2BDB2&product%5Flogo=https%3A%2F%2Fd3uimxdj41cg3o.cloudfront.net%2Fproducts%2F89f0fd5c927d466d6ec9a21b9ac34ffa-8c0a9abe88dccc0177aff2648bfc8b12%2Fresources%2Fnormal%2Flogo.png%3F1729564751&price=5) [Pricing](https://pmo.selecthub.com/get-product-pricing/?category=Relational+Databases&product%5Fname=IBM%2BDB2&product%5Flogo=https%3A%2F%2Fd3uimxdj41cg3o.cloudfront.net%2Fproducts%2F89f0fd5c927d466d6ec9a21b9ac34ffa-8c0a9abe88dccc0177aff2648bfc8b12%2Fresources%2Fnormal%2Flogo.png%3F1729564751&price=5) ### Products Insights Overall Rating Comparison [ Analyst Rating 74 Detailed Analysis ](#analyst-rating-section) [ User Sentiment ![Great User Sentiment](https://www.selecthub.com/display/images/scores/great.svg) (1580 Reviews) ](#user-sentiment-section) [ Analyst Rating 83 Detailed Analysis ](#analyst-rating-section) [ User Sentiment ![Great User Sentiment](https://www.selecthub.com/display/images/scores/great.svg) (1235 Reviews) ](#user-sentiment-section) Price Starts From $0 Free, Open-Source [ Free Trial is available →](https://pmo.selecthub.com/free-trial/?product%5Fname=PostgreSQL&category=Relational Databases&product%5Flogo=https://d3uimxdj41cg3o.cloudfront.net/products/9554b1e815bd9412c45cf4cc459288bc-99b50b4e9b2285d245947dfe0f380ba3/resources/normal/logo.png?1729566032) $1,373 Monthly, Freemium [ Free Trial is available →](https://pmo.selecthub.com/free-trial/?product%5Fname=IBM DB2&category=Relational Databases&product%5Flogo=https://d3uimxdj41cg3o.cloudfront.net/products/89f0fd5c927d466d6ec9a21b9ac34ffa-8c0a9abe88dccc0177aff2648bfc8b12/resources/normal/logo.png?1729564751) Pros What we like about PostgreSQL and IBM DB2: **Open-Source:** PostgreSQL is open-source software, meaning there are no licensing costs, leading to a lower total cost of ownership compared to proprietary databases. **Reliable and Robust:** PostgreSQL is known for its stability and reliability, making it suitable for mission-critical applications that require consistent performance and data integrity. **Handles Large Datasets:** PostgreSQL excels in handling large datasets and high-traffic applications due to its horizontal scalability, which is achieved through features like read replicas and connection pooling. **Feature-Rich:** PostgreSQL boasts a comprehensive set of features, including advanced SQL support, diverse data types (like JSON and arrays), and robust indexing techniques, enabling developers to build sophisticated and efficient applications. **Scalability for Large Datasets:** IBM DB2 excels in managing large datasets, making it suitable for applications that demand high scalability and performance as data volumes grow. **Strong Security Features:** DB2 is known for its robust security features, including encryption and access controls, making it a suitable choice for businesses handling sensitive information. **User-Friendly Interface:** Many users praise DB2 for its ease of use and administration, particularly its straightforward installation process, which simplifies setup and management tasks. Cons What we dislike about PostgreSQL and IBM DB2: **GUI Tools:** PostgreSQL's GUI tools are not as advanced as some other database systems, which might be a drawback for users who prefer visual interfaces. **Performance Limitations:** PostgreSQL's architecture can lead to performance bottlenecks, especially for complex queries that require utilizing multiple CPU cores. **Cost:** IBM Db2 is a significant investment, potentially straining IT budgets, especially for smaller companies. **Resource Intensive:** Db2 requires robust hardware for optimal performance, which can increase operational costs. **Complex User Interface:** Some users find the interface and tools less intuitive compared to other database management systems, leading to a steeper learning curve. ### Our Review Is PostgreSQL truly a post to be reckoned with in the database world? User reviews from the last year paint a largely positive picture of PostgreSQL, highlighting its strengths as a powerful and versatile open-source database solution. Users consistently praise its ease of use, with one reviewer stating that "PostgreSQL, unlike other databases, is user-friendly." They appreciate its fast execution and compatibility with other systems, making it a favorite for tasks ranging from simple data storage to complex microservices architectures. A key differentiating factor is its open-source nature, which translates to cost-effectiveness, a major plus for businesses and developers. One user pointed out that PostgreSQL's open-source licensing allowed them to "use as many database instances as we need without massive cost increase." However, some users point out a steeper learning curve compared to alternatives like MySQL, particularly for beginners navigating its advanced features. Overall, PostgreSQL emerges as a robust and reliable database solution best suited for developers and businesses seeking a powerful and cost-effective option, especially those comfortable with or willing to learn its intricacies. Show more Is IBM Db2 all its cracked up to be, or does it fall flat? IBM Db2 is a powerful database management system known for its scalability, reliability, and security features. Users consistently praise its stability and performance, particularly its ability to efficiently handle large data volumes. For instance, its advanced query optimization and parallel processing capabilities contribute to faster response times, making it a top choice for enterprises with demanding requirements. However, some users find the initial setup process complex and the user interface less intuitive compared to other systems. Additionally, while Db2 offers robust security features like encryption and access controls, its robust features and capabilities come at a significant cost, potentially posing a barrier for smaller businesses. Overall, IBM Db2 is best suited for large enterprises and organizations with high data volumes, complex workloads, and stringent security needs. Its ability to handle massive datasets efficiently, coupled with its robust security features, makes it a compelling choice for industries like finance, healthcare, and telecommunications. However, smaller businesses with limited budgets and technical expertise may find alternative database solutions more cost-effective and manageable. Show more ### Analyst Rating Summary Overall Scores Based on the research and analysis by SelectHub's team of research analysts, PostgreSQL has an analyst rating of 74\. By comparison IBM DB2 has an analyst rating of 83. 74 83 Features Comparison **Data Definition and Manipulation** Provides a structured framework for defining, storing, and manipulating data, enabling efficient data organization and retrieval. 100 100 **Data Integration and Interoperability** Facilitates seamless data integration and interoperability with other systems and applications, enabling efficient data sharing and analysis. 85 96 **Data Management and Partitioning** Offers efficient data management and partitioning capabilities, optimizing database performance and scalability for large-scale data storage and retrieval. 81 96 [Show More](#) [Show More](https://pmo.selecthub.com/customize-data/?category=Relational Databases) Strengths The best features of PostgreSQL and IBM DB2 as judged by user reviews and analyst validation. Data Definition and Manipulation Transaction Management Querying Data Integration and Interoperability Data Definition and Manipulation Performance and Scalability Querying Transaction Management Integrations and Extensibility ### Analyst Ratings for Functional Requirements [Customize This Data](#) [Customize This Data](https://pmo.selecthub.com/customize-data/?category=Relational Databases) How PostgreSQL and IBM DB2 compare against the top 6 functional requirements as defined by SelectHub project data. PostgreSQL IBM DB2 \+ Add Product [\+ Add Product](https://pmo.selecthub.com/customize-data/?category=Relational Databases) Data Definition and Manipulation Data Integration AndInteroperability Data Management AndPartitioning Platform Capabilities Querying TransactionManagement 100 85 81 78 91 100 100 96 96 92 100 100 0 25 50 75 100 Implementation Level of Effort Estimation **Tier 1:** Fully/moderately supported out-of-the-box allowing for quick and easy deployment. [Read more](#) **Tier 2:** Supported with workarounds or add-ons that may require additional costs. **Tier 3:** Requires partner integrations or custom development that is often at an additional cost. **Data Definition And Manipulation** Provides a structured framework for defining, storing, and manipulating data, enabling efficient data organization and retrieval. 100% 0% 0% 100% 0% 0% **Data Integration And Interoperability** Facilitates seamless data integration and interoperability with other systems and applications, enabling efficient data sharing and analysis. 75% 25% 0% 100% 0% 0% **Data Management And Partitioning** Offers efficient data management and partitioning capabilities, optimizing database performance and scalability for large-scale data storage and retrieval. 50% 50% 0% 100% 0% 0% **Platform Capabilities** Offers cross-platform compatibility, enabling organizations to deploy and manage databases across various operating systems and hardware platforms. 50% 17% 33% 83% 0% 17% **Querying** Provides powerful query languages, enabling users to retrieve, analyze, and manipulate data efficiently, supporting informed decision-making and business intelligence. 88% 13% \-1% 100% 0% 0% **Transaction Management** Ensures data consistency and integrity through robust transaction management, preventing data loss and ensuring accurate data processing. 100% 0% 0% 100% 0% 0% **Customize This Data For Your Unique Needs** and compare feature capabilities head-to-head [CUSTOMIZE NOW](#) [CUSTOMIZE NOW](https://pmo.selecthub.com/customize-data/?category=Relational Databases) ### Analyst Ratings for Technical Requirements [Customize This Data](#) [Customize This Data](https://pmo.selecthub.com/customize-data/?category=Relational Databases) Implementation Level of Effort Estimation **Tier 1:** Fully/moderately supported out-of-the-box allowing for quick and easy deployment. [Read more](#) **Tier 2:** Supported with workarounds or add-ons that may require additional costs. **Tier 3:** Requires partner integrations or custom development that is often at an additional cost. **Integrations And Extensibility** Seamlessly integrates with other applications and data sources, enabling organizations to build complex data solutions and leverage the power of data-driven insights. 75% 0% 25% 100% 0% 0% **Performance And Scalability** Offers robust performance and scalability, enabling organizations to handle large datasets and complex queries efficiently, supporting business growth and critical applications. 60% 40% 0% 100% 0% 0% **Security** Prioritizes data security, safeguarding sensitive information through robust encryption, access controls, and data privacy measures. 50% 50% 0% 75% 25% 0% **Requirements Summary** Of typical requirements, 42.9% are fully supported out of the box by PostgreSQL including Data Definition And Manipulation, Transaction Management and Platform Capabilities. IBM DB2 supports 87.8% and excels at Data Definition And Manipulation, Performance And Scalability and Querying. PostgreSQL has an analyst rating of 74 and a user sentiment rating of 'great' based on 1580 reviews, while IBM DB2 has an analyst rating of 83 and a user sentiment rating of 'great' based on 1235 reviews. ### User Sentiment Summary PostgreSQL has a user sentiment rating of 88 based on 1580 reviews. IBM DB2 has a user sentiment rating of 85 based on 1235 reviews. ![Great User Sentiment](https://www.selecthub.com/display/images/scores/great.svg) 1580 reviews ![Great User Sentiment](https://www.selecthub.com/display/images/scores/great.svg) 1235 reviews Synopsis Evaluating all review platforms, our market analysts have compiled the following user sentiment data. 88% of users recommend this product PostgreSQL has a 'great' User Satisfaction Rating of 88% when considering 1580 user reviews from 4 recognized software review sites. 85% of users recommend this product IBM DB2 has a 'great' User Satisfaction Rating of 85% when considering 1235 user reviews from 4 recognized software review sites. User Review Scores **G2.com, Inc** **4.4** (639) **4.1** (672) **Capterra Inc** **4.6** (414) **4.4** (52) **Gartner, Inc** **4.3** (187) **4.7** (273) **TrustRadius** **4.3** (340) **4.2** (238) ### Awards SelectHub awards earned by these products based on a comprehensive analysis by our research analysts. No awards. SelectHub research analysts have evaluated IBM DB2 and concluded it earns best-in-class honors for Querying and Performance and Scalability. ![Querying Award]() ![Performance and Scalability Award]() ### Product Assistance Training Resources Documentation In Person Live Online Videos Webinars Documentation In Person Live Online Videos Webinars Support Email Phone Chat FAQ Forum Knowledge Base 24/7 Live Support Email Phone Chat FAQ Forum Knowledge Base 24/7 Live Support ### Product Basics Company Size i Small Medium Large Small Medium Large Platforms Supported Windows Mac Linux Android Chromebook Windows Mac Linux Android Chromebook Deployment Supported Cloud On-Premise Mobile Cloud On-Premise Mobile Comparison of Top Alternatives [ PostgreSQL Alternatives](https://www.selecthub.com/relational-database-solutions/postgresql/alternatives/) [ IBM DB2 Alternatives](https://www.selecthub.com/relational-database-solutions/ibm-db2/alternatives/) ### Screenshots ![Screenshots]() ![Screenshots]() ### Key Features * **ACID Compliance:** PostgreSQL ensures reliable transactions with Atomicity, Consistency, Isolation, and Durability, making it suitable for critical applications. * **Advanced Data Types:** Supports a wide range of data types including JSON, XML, and arrays, allowing for flexible data modeling. * **Extensibility:** Users can define custom data types, operators, and functions, enhancing the database's adaptability to specific needs. * **Full-Text Search:** Built-in capabilities for full-text search enable efficient querying of textual data, useful for applications like search engines. * **MVCC (Multi-Version Concurrency Control):** Provides high concurrency and performance by allowing multiple transactions to occur simultaneously without locking. read more... * **Multi-Model Support:** IBM Db2 supports multiple data models, including relational, graph, and JSON, allowing for versatile data management. * **Advanced Compression:** Db2 offers adaptive compression techniques that reduce storage costs by compressing data dynamically without compromising performance. * **BLU Acceleration:** This in-memory columnar processing technology enhances query performance by optimizing CPU and memory usage. * **Data Federation:** Db2 can integrate data from various sources, providing a unified view without the need for data replication. * **High Availability and Disaster Recovery:** Features like HADR (High Availability Disaster Recovery) ensure data availability and integrity across different environments. read more... ### Top Alternatives in Relational Databases [ Amazon Aurora ](https://www.selecthub.com/p/relational-database-solutions/amazon-aurora/) [ Amazon RDS ](https://www.selecthub.com/p/relational-database-solutions/amazon-rds/) [ Azure SQL Database ](https://www.selecthub.com/p/relational-database-solutions/azure-sql-database/) [ Firebird ](https://www.selecthub.com/p/relational-database-solutions/firebird-database/) [ Google Cloud SQL ](https://www.selecthub.com/p/relational-database-solutions/google-cloud-sql/) [ HSQLDB ](https://www.selecthub.com/p/relational-database-solutions/hsqldb/) [ IBM DB2 ](https://www.selecthub.com/p/relational-database-solutions/ibm-db2/) [ MariaDB ](https://www.selecthub.com/p/relational-database-solutions/mariadb/) [ MySQL ](https://www.selecthub.com/p/relational-database-solutions/mysql/) [ Oracle Database ](https://www.selecthub.com/p/relational-database-solutions/oracle-database/) ### Head-to-Head Comparison ![PostgreSQL Software Tool]() ![Amazon Aurora Software Tool]() [PostgreSQL VS Amazon Aurora](https://www.selecthub.com/relational-database-solutions/postgresql-vs-amazon-aurora/) ![PostgreSQL Software Tool]() ![Amazon RDS Software Tool]() [PostgreSQL VS Amazon RDS](https://www.selecthub.com/relational-database-solutions/postgresql-vs-amazon-rds/) ![PostgreSQL Software Tool]() ![Azure SQL Database Software Tool]() [PostgreSQL VS Azure SQL Database](https://www.selecthub.com/relational-database-solutions/postgresql-vs-azure-sql-database/) ![PostgreSQL Software Tool]() ![Firebird Software Tool]() [PostgreSQL VS Firebird](https://www.selecthub.com/relational-database-solutions/postgresql-vs-firebird-database/) ![PostgreSQL Software Tool]() ![Google Cloud SQL Software Tool]() [PostgreSQL VS Google Cloud SQL](https://www.selecthub.com/relational-database-solutions/postgresql-vs-google-cloud-sql/) ![PostgreSQL Software Tool]() ![HSQLDB Software Tool]() [PostgreSQL VS HSQLDB](https://www.selecthub.com/relational-database-solutions/postgresql-vs-hsqldb/) ![PostgreSQL Software Tool]() ![IBM DB2 Software Tool]() [PostgreSQL VS IBM DB2](https://www.selecthub.com/relational-database-solutions/postgresql-vs-ibm-db2/) ![PostgreSQL Software Tool]() ![MariaDB Software Tool]() [PostgreSQL VS MariaDB](https://www.selecthub.com/relational-database-solutions/postgresql-vs-mariadb/) ![PostgreSQL Software Tool]() ![MySQL Software Tool]() [PostgreSQL VS MySQL](https://www.selecthub.com/relational-database-solutions/mysql-vs-postgresql/) ![PostgreSQL Software Tool]() ![Oracle Database Software Tool]() [PostgreSQL VS Oracle Database](https://www.selecthub.com/relational-database-solutions/postgresql-vs-oracle-database/) ![PostgreSQL Software Tool]() ![SAP ASE Software Tool]() [PostgreSQL VS SAP ASE](https://www.selecthub.com/relational-database-solutions/postgresql-vs-sap-ase/) ![PostgreSQL Software Tool]() ![SQL Server Software Tool]() [PostgreSQL VS SQL Server](https://www.selecthub.com/relational-database-solutions/postgresql-vs-sql-server/) **About SelectHub (and our data)** We’re the employee-owned Austin-based startup democratizing software data so you can make your decisions in an influence-free zone. Our market data is crowdsourced from our user-base of 100,000+ companies. WE DISTILL IT INTO REAL REQUIREMENTS, COMPARISON REPORTS, PRICE GUIDES and more... ![SelectHub Products Reporting and Analytics]() [ Build Your Requirements](https://pmo.selecthub.com/software-requirements/?category=Relational%20Databases&campaign%5Fname=Relational%20Databases%20Requirements) ![SelectHub Products Cost and Pricing Guide]() [ Get Your Free Comparison Report](https://pmo.selecthub.com/request-custom-scorecard/?category=Relational%20Databases) **Tier 1:** Fully/moderately supported out-of-the-box allowing for quick and easy deployment. Fully or moderately supported out-of-the-box with industry-leading capabilities and is immediately available after installation without needing any add-ons, integrations, or custom development. **Tier 2:** Supported with workarounds or add-ons that may require additional costs. Not directly available in the software, but can be accomplished using other built-in features, workarounds, or add-ons/products from the vendor with or without any additional cost. **Tier 3:** Requires partner integrations or custom development that is often at an additional cost. Requires additional integrations, plugins, marketplace applications from a third-party vendor, or custom development using the APIs, libraries, extensions, and development framework supported by the software, with or without any additional cost. 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