Best Relational Database for Linux of 2025

RaimaDB, an embedded time series database that can be used for Edge and IoT devices, can run in-memory. It is a lightweight, secure, and extremely powerful RDBMS. It has been field tested by more than 20 000 developers around the world and has been deployed in excess of 25 000 000 times. RaimaDB is a high-performance, cross-platform embedded database optimized for mission-critical applications in industries such as IoT and edge computing. Its lightweight design makes it ideal for resource-constrained environments, supporting both in-memory and persistent storage options. RaimaDB offers flexible data modeling, including traditional relational models and direct relationships through network model sets. With ACID-compliant transactions and advanced indexing methods like B+Tree, Hash Table, R-Tree, and AVL-Tree, it ensures data reliability and efficiency. Built for real-time processing, it incorporates multi-version concurrency control (MVCC) and snapshot isolation, making it a robust solution for applications demanding speed and reliability.

KS DB Merge Tools is an easy to use diff & merge tool for MySQL, MariaDB, Oracle Database, SQL Server, PostgreSQL, MS Access, SQLite and Cross-DBMS databases allowing to compare and sync both schema and data. Starting with a schema changes summary, results can be narrowed down to object lists of particular object type (table definitions, views, etc.), and then down to definition of particular object. Data changes can be retrieved as a high-level list of changes totals across all tables in the database, each total row count can be observed as a side-by-side list of rows for the given table, each changed row can be analyzed for changes in each column. Various diff results provide quick filters to show only new/changed/new+changed items (schema objects or table data rows), ability to select required changed items and generate scripts to apply these changes to the other side database. This script can be executed immediately or saved for future use.

Percona Server is a fully-compatible, enhanced and open-source drop-in replacement for MySQL. It offers superior performance, scalability and instrumentation. Percona Server boasts over 5,300,000. Downloads and support for high-performance hardware provide excellent performance and reliability. Percona Server MySQL offers enterprise-grade features, higher uptime, and a variety of key benefits that increase database performance and efficiency. Because users spend less time tuning and administering, they have more time to focus on the most important priorities. Percona is a market leader providing enterprise-class software and support. Consulting, managed services, as well as training for open-source databases that are both on-premise or cloud-based, include consulting, training, and consulting. Percona was founded with the belief that everyone should be able to access scalable, secure and efficient database software features without any vendor lock-in or excessive fees.

MySQL stands out as the most widely used open source database globally. Thanks to its established track record in performance, dependability, and user-friendliness, it has emerged as the preferred database for web applications, powering notable platforms such as Facebook, Twitter, and YouTube, alongside the top five websites. Furthermore, MySQL is also highly favored as an embedded database solution, being distributed by numerous independent software vendors and original equipment manufacturers. Its versatility and robust features contribute to its widespread adoption across various industries.

Tibero has implemented a unique Tibero Thread Architecture to address the disadvantages of previous DBMSs. As a result, Tibero can make efficient use of system resources, such as CPU and memory, with fewer server processes. This ensures that Tibero offers high performance, reliability, and scalability, while facilitating efficient development and administration functions. Additionally, it provides users and developers with various standard development interfaces for easy integration with other DBMSs and 3rd party tools. In addition, Tibero adopts the block transfer technology to improve TAC, the shared database clustering which is similar to Oracle RAC. Through the enhanced function, Tibero supports performance optimization with self-tuning, reliable database monitoring, and performance management.

Transform and enhance your transaction-driven applications both on-premise and in the cloud by using SAP Adaptive Server Enterprise (SAP ASE). This cutting-edge SQL database server utilizes a relational management framework designed to satisfy the increasing needs for performance, reliability, and efficiency across various sectors. Streamline your operations and cut costs with features like workload analyzer and workload profiler that ensure built-in high availability, effective disaster recovery, and optimal resource management. Expand your capacity for transactions, data, and users while boosting performance with advanced technology solutions, including MemScale and XOLTP. By minimizing overhead on production databases, Q-Free employees can concentrate more on driving innovation and delivering value. You can deploy SAP ASE either on-premise or through infrastructure as a service (IaaS), ensuring high performance and availability essential for executing mission-critical transactions. Additionally, this versatility allows businesses to adapt to evolving market demands swiftly.

Experience serverless and interactive data querying with IBM Cloud Object Storage, enabling you to analyze your data directly at its source without the need for ETL processes, databases, or infrastructure management. IBM Cloud SQL Query leverages Apache Spark, a high-performance, open-source data processing engine designed for quick and flexible analysis, allowing SQL queries without requiring ETL or schema definitions. You can easily perform data analysis on your IBM Cloud Object Storage via our intuitive query editor and REST API. With a pay-per-query pricing model, you only incur costs for the data that is scanned, providing a cost-effective solution that allows for unlimited queries. To enhance both savings and performance, consider compressing or partitioning your data. Furthermore, IBM Cloud SQL Query ensures high availability by executing queries across compute resources located in various facilities. Supporting multiple data formats, including CSV, JSON, and Parquet, it also accommodates standard ANSI SQL for your querying needs, making it a versatile tool for data analysis. This capability empowers organizations to make data-driven decisions more efficiently than ever before.

Apache Phoenix provides low-latency OLTP and operational analytics on Hadoop by merging the advantages of traditional SQL with the flexibility of NoSQL. It utilizes HBase as its underlying storage, offering full ACID transaction support alongside late-bound, schema-on-read capabilities. Fully compatible with other Hadoop ecosystem tools such as Spark, Hive, Pig, Flume, and MapReduce, it establishes itself as a reliable data platform for OLTP and operational analytics through well-defined, industry-standard APIs. When a SQL query is executed, Apache Phoenix converts it into a series of HBase scans, managing these scans to deliver standard JDBC result sets seamlessly. The framework's direct interaction with the HBase API, along with the implementation of coprocessors and custom filters, enables performance metrics that can reach milliseconds for simple queries and seconds for larger datasets containing tens of millions of rows. This efficiency positions Apache Phoenix as a formidable choice for businesses looking to enhance their data processing capabilities in a Big Data environment.

CUBRID is a relational database management system (DBMS) specifically designed for online transaction processing (OLTP) that adheres to ANSI SQL standards, offering features such as MVCC support, high-availability capabilities, and user-friendly GUI tools for database management and migration. Additionally, it boasts compatibility with Oracle and MySQL, and supports a range of interfaces, including JDBC. Installation is straightforward, and it includes native GUI-based administration tools to streamline the development process. CUBRID's architecture is multi-threaded and multi-server, equipped with a native broker middleware, a cost-based optimizer, and advanced caching methods to enhance OLTP performance. It also incorporates highly reliable automatic failover technology via the CUBRID Heartbeat engine core, ensuring minimal downtime. With multi-volume support and automatic volume expansion, it can handle an extensive number of databases, tables, and indexes without size limitations. Furthermore, its robust features make it suitable for dynamic and scalable applications in various industries.

IBM Db2 encompasses a suite of data management solutions, prominently featuring the Db2 relational database. These offerings incorporate AI-driven functionalities designed to streamline the management of both structured and unstructured data across various on-premises and multicloud settings. By simplifying data accessibility, the Db2 suite empowers businesses to leverage the advantages of AI effectively. Most components of the Db2 family are integrated within the IBM Cloud Pak® for Data platform, available either as additional features or as built-in data source services, ensuring that nearly all data is accessible across hybrid or multicloud frameworks to support AI-driven applications. You can easily unify your transactional data repositories and swiftly extract insights through intelligent, universal querying across diverse data sources. The multimodel functionality helps reduce expenses by removing the necessity for data replication and migration. Additionally, Db2 offers enhanced flexibility, allowing for deployment on any cloud service provider, which further optimizes operational agility and responsiveness. This versatility in deployment options ensures that businesses can adapt their data management strategies as their needs evolve.

IBM Informix® is a highly adaptable and efficient database that can effortlessly combine SQL, NoSQL/JSON, as well as time series and spatial data. Its flexibility and user-friendly design position Informix as a top choice for diverse settings, ranging from large-scale enterprise data warehouses to smaller individual application development projects. Moreover, due to its compact footprint and self-managing features, Informix is particularly advantageous for embedded data management applications. The rising demand for IoT data processing necessitates strong integration and processing capabilities, which Informix fulfills with its hybrid database architecture that requires minimal administrative effort and has a small memory footprint while delivering robust functionality. Notably, Informix is well-equipped for multi-tiered architectures that necessitate processing at various levels, including devices, gateway layers, and cloud environments. Furthermore, it incorporates native encryption to safeguard data both at rest and in transit. Additionally, Informix supports a flexible schema alongside multiple APIs and configurations, making it a versatile choice for modern data management challenges.

The enterprise database for time series, documents, and vectors. Store any type data and combine the simplicity and scalability NoSQL with SQL. CrateDB is a distributed database that runs queries in milliseconds regardless of the complexity, volume, and velocity.

SAP HANA is an in-memory database designed to handle both transactional and analytical workloads using a single copy of data, regardless of type. It effectively dissolves the barriers between transactional and analytical processes within organizations, facilitating rapid decision-making whether deployed on-premises or in the cloud. This innovative database management system empowers users to create intelligent, real-time solutions, enabling swift decision-making from a unified data source. By incorporating advanced analytics, it enhances the capabilities of next-generation transaction processing. Organizations can build data solutions that capitalize on cloud-native attributes such as scalability, speed, and performance. With SAP HANA Cloud, businesses can access reliable, actionable information from one cohesive platform while ensuring robust security, privacy, and data anonymization, reflecting proven enterprise standards. In today's fast-paced environment, an intelligent enterprise relies on timely insights derived from data, emphasizing the need for real-time delivery of such valuable information. As the demand for immediate access to insights grows, leveraging an efficient database like SAP HANA becomes increasingly critical for organizations aiming to stay competitive.

PostgreSQL stands out as a highly capable, open-source object-relational database system that has been actively developed for more than three decades, earning a solid reputation for its reliability, extensive features, and impressive performance. Comprehensive resources for installation and usage are readily available in the official documentation, which serves as an invaluable guide for both new and experienced users. Additionally, the open-source community fosters numerous forums and platforms where individuals can learn about PostgreSQL, understand its functionalities, and explore job opportunities related to it. Engaging with this community can enhance your knowledge and connection to the PostgreSQL ecosystem. Recently, the PostgreSQL Global Development Group announced updates for all supported versions, including 15.1, 14.6, 13.9, 12.13, 11.18, and 10.23, which address 25 reported bugs from the past few months. Notably, this marks the final release for PostgreSQL 10, meaning that it will no longer receive any security patches or bug fixes going forward. Therefore, if you are currently utilizing PostgreSQL 10 in your production environment, it is highly recommended that you plan to upgrade to a more recent version to ensure continued support and security. Upgrading will not only help maintain the integrity of your data but also allow you to take advantage of the latest features and improvements introduced in newer releases.

Infobright DB is an enterprise-grade database that utilizes a columnar storage architecture, enabling business analysts to efficiently analyze data and rapidly generate reports. This versatile database can be implemented both on-premise and in cloud environments. It is designed to store and analyze substantial amounts of big data, facilitating interactive business intelligence and handling complex queries with ease. By enhancing query performance and lowering storage costs, it significantly boosts overall efficiency in analytics and reporting processes. With capabilities to manage hundreds of terabytes of data, Infobright DB overcomes the limitations often faced by traditional databases. This solution supports big data applications while removing the need for indexing and partitioning, resulting in no administrative burden. In an era where machine data is growing exponentially, IgniteTech’s Infobright DB is purpose-built to deliver exceptional performance for large quantities of machine-generated information. Furthermore, it allows users to manage intricate ad hoc analytical environments without the heavy database administration demands seen in other solutions. This makes it an invaluable tool for organizations seeking to optimize their data handling and analysis.

Altibase stands out as a robust, high-performance relational database, designed for enterprise use and available as an open-source solution. It combines the speed of in-memory processing with the extensive storage capabilities of on-disk databases, achieving performance that is tenfold faster than traditional on-disk systems. Businesses have consistently favored Altibase over major competitors like Oracle, IBM, and Microsoft due to its effectiveness. Since its inception in 1999, Altibase has successfully transitioned numerous conventional on-disk databases in various sectors that demand real-time data solutions. The platform boasts over 650 enterprise clients globally, including 8 companies from the Fortune Global 500, and supports thousands of critical deployments across the world. With a wealth of mature features and functionalities, Altibase's open-source nature is complemented by its advanced scale-out technology, known as sharding. Additionally, it offers a cost-effective alternative with no licensing fees, alongside flexible subscription options. With two decades of expertise, Altibase has effectively addressed more than 6,000 mission-critical use cases, affirming its reliability in high-stakes environments.

SAP® MaxDB™, developed and maintained by SAP SE, serves as the proprietary database management system for SAP applications. This database is engineered to minimize the total cost of ownership (TCO) associated with SAP solutions. Within SAP environments, MaxDB is utilized to manage both the application logic and the associated business data. It is a vital component of any installation of SAP solutions, underpinning their reliability and performance. Comprehensive resources are available for creating and configuring the database, monitoring its operation, ensuring data is backed up and recoverable, as well as importing and exporting data. Additionally, user management, performance analysis, SQL optimization, error detection, and the development of database applications are facilitated. Integrated tools within the Computing Centre Management System (CCMS) enable users to analyze SAP MaxDB databases, schedule necessary actions, and monitor various database functions and alerts. A command-line interface is also available for efficient database administration, enhancing user control and oversight. This multifaceted approach ensures that SAP MaxDB remains a robust and flexible solution for enterprise data management.

HEAVY.AI is a pioneer in accelerated analysis. The HEAVY.AI platform can be used by government and business to uncover insights in data that is beyond the reach of traditional analytics tools. The platform harnesses the huge parallelism of modern CPU/GPU hardware and is available both in the cloud or on-premise. HEAVY.AI was developed from research at Harvard and MIT Computer Science and Artificial Intelligence Laboratory. You can go beyond traditional BI and GIS and extract high-quality information from large datasets with no lag by leveraging modern GPU and CPU hardware. To get a complete picture of what, when and where, unify and explore large geospatial or time-series data sets. Combining interactive visual analytics, hardware accelerated SQL, advanced analytics & data sciences frameworks, you can find the opportunity and risk in your enterprise when it matters most.

Gilhari is a microservice framework that provides persistence for JSON objects in relational database. This microservice framework is available as a Docker image and can be configured according to an app-specific object or relational model. Gilhari exposes REST (Representational State Transfer) interface for APIs (POST/GET, PUT and DELETE ) to perform CRUD (Create. Retrieve. Update. Delete) operations on app-specific JSON objects. Here are some highlights from Gilhari: * Metadata driven, object model independent and database agnostic framework * Easily customizable/configurable to your JSON object model * JSON attributes can be mapped to table columns, allowing full query capabilities as well as optimizations * Supports complex object modeling, including 1-m, 1-m and m-m relationships * No code is required to handle REST APIs (POST/GET, PUT/DELETE), data exchange (CRUD), or database schema creation.

Dqlite is a high-speed, embedded SQL database that offers persistent storage and utilizes Raft consensus, making it an ideal choice for resilient IoT and Edge devices. Known as "distributed SQLite," Dqlite expands SQLite's capabilities across multiple machines, ensuring automatic failover and high availability to maintain application uptime. It employs C-Raft, an optimized implementation of Raft in C, which provides exceptional performance in transactional consensus and fault tolerance while maintaining SQLite’s renowned efficiency and compact size. C-Raft is specifically designed to reduce transaction latency, enabling faster operations. Both C-Raft and Dqlite are implemented in C, ensuring they are portable across various platforms. Released under the LGPLv3 license with a static linking exception, it guarantees broad compatibility. The system features a standard CLI pattern for initializing databases and managing the joining or leaving of voting members. It also incorporates minimal, configurable delays for failover alongside automatic leader election processes. Additionally, Dqlite supports a disk-backed database option with in-memory capabilities and adheres to SQLite's transaction protocols. The blend of these features makes Dqlite a powerful solution for modern data storage needs.

solidDB has gained global recognition for its ability to deliver data at remarkable speeds. Millions of solidDB installations can be found across telecommunications networks, enterprise applications, and embedded systems. Leading companies like Cisco, HP, Alcatel, Nokia, and Siemens depend on solidDB for their most critical applications. By storing essential data in memory instead of on traditional disk systems, solidDB outperforms standard databases significantly. This allows applications to achieve throughputs ranging from hundreds of thousands to millions of transactions per second, with response times that are measured in mere microseconds. In addition to its revolutionary performance, solidDB includes built-in features that ensure data availability, helping to maintain uptime, avert data loss, and speed up recovery processes. Furthermore, solidDB is designed to offer administrators the flexibility to customize the software to meet specific application requirements, while also including user-friendly features for easier deployment and management, which contributes to a reduction in total cost of ownership (TCO). Ultimately, the combination of high performance and adaptability makes solidDB a preferred choice in the competitive landscape of data management solutions.

rqlite is a lightweight and easy-to-use distributed relational database that leverages SQLite’s capabilities. It offers high availability and fault tolerance without the usual complexities. By merging SQLite's user-friendly design with a reliable, robust system, rqlite stands out as a developer-oriented solution. Its straightforward operations ensure that users can deploy it in mere seconds, avoiding intricate configurations. The database effortlessly fits into modern cloud environments and is built on SQLite, which is recognized as the most widely used database globally. It features full-text search, Vector Search, and support for JSON documents, catering to various data needs. Enhanced security is provided through access controls and encryption for secure deployments. The platform benefits from rigorous automated testing processes that guarantee its quality. Clustering capabilities further enhance its availability and fault tolerance, while automatic node discovery streamlines the clustering process, making it even more user-friendly. This combination of features makes rqlite an ideal choice for developers looking for simplicity without sacrificing reliability.

Experience outstanding and economical database performance while enjoying unparalleled flexibility with CA's established, web-based, high-efficiency mainframe relational database management system. This robust database offers dependable, scalable, secure, and cost-effective management solutions. It facilitates seamless participation in mobile-to-mainframe projects, cloud computing, web integration, and analytics through its open capabilities. Engineered for scalability, it adeptly addresses the growing demands of businesses while focusing on operational efficiency to help minimize expenses. Users of IDMS can swiftly and effortlessly access data to harness solutions that diagnose system challenges, automate processes and notifications, and generate insightful recommendations for optimization. Additionally, next-generation users can execute and automate IDMS administration tasks using familiar tools and scripting languages. Together, let’s embark on a collaborative journey to explore and understand your project requirements in depth. By aligning our expertise with your vision, we can craft tailored solutions that meet your specific needs.

Welcome to H2, a Java SQL database designed for efficient data management. In its embedded mode, an application can access the database directly within the same Java Virtual Machine (JVM) using JDBC, making it the quickest and simplest connection method available. However, a drawback of this setup is that the database can only be accessed by one virtual machine and class loader at a time. Like other modes, it accommodates both persistent and in-memory databases without restrictions on the number of simultaneous database accesses or open connections. On the other hand, the mixed mode combines features of both embedded and server modes; the initial application that connects to the database operates in embedded mode while simultaneously launching a server to enable other applications in different processes or virtual machines to access the same data concurrently. This allows local connections to maintain the high speed of the embedded mode, whereas remote connections may experience slight delays. Overall, H2 provides a flexible and robust solution for various database needs.