List of the Top 4 Relational Database for Deep.BI in 2025

MySQL is recognized as the leading open source database in the world. Its impressive history of reliability, performance, and ease of use has made it the go-to choice for many web applications, including major platforms like Facebook, Twitter, and YouTube, as well as the five most visited websites. Additionally, MySQL is a popular option for embedded database solutions, with many independent software vendors and original equipment manufacturers distributing it. The database's flexibility and powerful capabilities further enhance its popularity across diverse sectors, making it a critical tool for developers and businesses alike. Its continued evolution ensures that it remains relevant in an ever-changing technological landscape.

Apache Druid stands out as a robust open-source distributed data storage system that harmonizes elements from data warehousing, timeseries databases, and search technologies to facilitate superior performance in real-time analytics across diverse applications. The system's ingenious design incorporates critical attributes from these three domains, which is prominently reflected in its ingestion processes, storage methodologies, query execution, and overall architectural framework. By isolating and compressing individual columns, Druid adeptly retrieves only the data necessary for specific queries, which significantly enhances the speed of scanning, sorting, and grouping tasks. Moreover, the implementation of inverted indexes for string data considerably boosts the efficiency of search and filter operations. With readily available connectors for platforms such as Apache Kafka, HDFS, and AWS S3, Druid integrates effortlessly into existing data management workflows. Its intelligent partitioning approach markedly improves the speed of time-based queries when juxtaposed with traditional databases, yielding exceptional performance outcomes. Users benefit from the flexibility to easily scale their systems by adding or removing servers, as Druid autonomously manages the process of data rebalancing. In addition, its fault-tolerant architecture guarantees that the system can proficiently handle server failures, thus preserving operational stability. This resilience and adaptability make Druid a highly appealing option for organizations in search of dependable and efficient analytics solutions, ultimately driving better decision-making and insights.

PostgreSQL is a robust and well-established open-source object-relational database system that has been under continuous development for over thirty years, earning a strong reputation for its dependability, rich features, and exceptional performance. The official documentation provides thorough resources for both installation and usage, making it an essential reference for newcomers and seasoned users alike. Moreover, the vibrant open-source community supports numerous forums and platforms where enthusiasts can deepen their understanding of PostgreSQL, explore its capabilities, and discover job openings in the field. Participating in this community can greatly enrich your knowledge while strengthening your ties to the PostgreSQL network. Recently, the PostgreSQL Global Development Group revealed updates for all currently supported versions, including 15.1, 14.6, 13.9, 12.13, 11.18, and 10.23, which fix 25 bugs reported in recent months. It is important to note that this update represents the final release for PostgreSQL 10, which will no longer receive any security patches or bug fixes moving forward. Therefore, if you are still using PostgreSQL 10 in a production environment, it is strongly advised to organize an upgrade to a newer version to maintain support and security. Transitioning to a more recent version will not only help safeguard your data but also enable you to benefit from the latest features and enhancements introduced in newer updates. Furthermore, keeping your database system up-to-date can significantly improve overall performance and provide better compatibility with modern applications.

The MariaDB Platform stands out as a robust open-source database solution tailored for enterprise use. It is versatile enough to handle transactional, analytical, and hybrid workloads while accommodating both relational and JSON data formats. Its scalability ranges from single databases to extensive data warehouses and fully distributed SQL systems capable of processing millions of transactions every second, enabling interactive analytics on vast datasets. Additionally, MariaDB offers deployment options on standard hardware as well as across major public cloud services, including its own fully managed cloud database, MariaDB SkySQL. For further details, you can explore MariaDB.com, which offers comprehensive insights into its features and capabilities. Overall, MariaDB is designed to meet the diverse needs of modern data management.